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### Feedback

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### History

#### Checkpoint description

Describe what's changed since the last checkpoint.

#### Christian Lawson-Perfect1 year, 5 months ago

Saved a checkpoint:

Replaced JavaScript marking with pattern restrictions.

#### Christian Lawson-Perfect3 years, 3 months ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect3 years, 3 months ago

Saved a checkpoint:

I've changed the parts so:

• part a always has two negative roots
• part b always has one positive root and one negative
• part c is the difference of two squares.

I don't think there was any point in the version which had a constant on the RHS.

I've added a marking script to check that the student's answer is factorised, rather than using string restrictions.

Published this.

#### Hannah Aldous3 years, 3 months ago

Gave some feedback: Needs to be tested

#### Christian Lawson-Perfect3 years, 3 months ago

Gave some feedback: Has some problems

#### Christian Lawson-Perfect3 years, 3 months ago

Saved a checkpoint:

You need to write a feedback message to show when the student doesn't use brackets.

I got $x^2-16$ for part b, which I'd solve by noticing it's the difference of two squares. Can you make sure the coefficient $x$ is non-zero?

I'd spin part b into its own question: first factorise, then write down the roots.

#### Hannah Aldous3 years, 4 months ago

Gave some feedback: Needs to be tested

#### Vicky Hall3 years, 4 months ago

I think this question should be renamed to 'factorising quadratic equations with $x^2$ coefficient $1$, and your other question (Factoring quadratics with larger coefficients) should be renamed 'factorising quadratic equations with $x^2$ coefficient greater than $1$.

There should be another line in the statement that shows how to solve the equation if it factorises to $(x+m)(x+n)=0$, as you ask the student to solve in the final part of the question.

In part a), I think it's a good idea to have a difference of two squares example to get students to think about how the equation can sometimes look a bit different. However, I think this should be moved to a subpart iii), and subpart i) should have a straightforward quadratic that looks exactly like the general form $ax^2+bx+c$.

#### Vicky Hall3 years, 4 months ago

Gave some feedback: Has some problems

#### Hannah Aldous3 years, 4 months ago

Gave some feedback: Needs to be tested

#### Lauren Richards3 years, 4 months ago

Gave some feedback: Has some problems

• MAIN PARTS
• There is a "$" sign in the statement. • MAYBE suggest the form to answer the question in in part a) but then again if they have read the statement, they should know which form to have it in so up to you really. • I think you should put a full stop after the formula in part b) and then start "input" with a capital letter. • ADVICE • No comma needed after "obtain" in part a)i). • Part b is fine! • Great question! #### Hannah Aldous3 years, 4 months ago Gave some feedback: Needs to be tested #### Hannah Aldous3 years, 4 months ago Created this. Name Status Author Last Modified Factorising Quadratic Equations with$x^2$Coefficients of 1 Ready to use Hannah Aldous 20/11/2019 14:39 Solving Quadratic Equations with$x^2$Coefficients of 1 by Factorising Should not be used Hannah Aldous 20/11/2019 14:42 Katherine's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Katherine Tomlinson 02/08/2017 12:44 Peter's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Peter Knowles 12/09/2017 12:29 MATH6058 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Catherine Palmer 27/01/2020 17:30 Ida's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ida Landgärds 13/04/2018 09:15 Ida's copy of Solving Quadratic Equations with$x^2$Coefficients of 1 by Factorising Doesn't work Ida Landgärds 19/04/2018 12:00 løs og faktorisere andregradslikninga draft Ida Landgärds 13/04/2018 10:54 spørsmål 6 draft Ida Landgärds 04/08/2020 08:59 Blathnaid's copy of spørsmål 6 draft Blathnaid Sheridan 15/08/2018 10:53 Blathnaid's copy of spørsmål 6 draft Blathnaid Sheridan 15/08/2018 10:55 Blathnaid's copy of spørsmål 6 draft Blathnaid Sheridan 15/08/2018 11:00 Ed's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ed Southwood 31/10/2018 12:26 Factorising Quadratic Expressions draft Ed Southwood 05/11/2018 12:00 Simon's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Simon Thomas 07/03/2019 09:52 what the heck? draft John Wick 30/05/2019 11:33 Factorizing Quadratic Equations with$x^2$Coefficients of 1 draft Xiaodan Leng 10/07/2019 21:45 Factorizing Quadratic Equations with$x^2$Coefficients of 1 draft Xiaodan Leng 10/07/2019 21:45 F11MTC - Topic 3 - Quadratic Equations 2 draft Oscar Siles Brugge 21/05/2020 11:45 Christian's copy of MATH6058 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Christian Lawson-Perfect 10/10/2019 10:02 Ann's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ann Smith 26/02/2020 17:52 Thoan's copy of MATH6058 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Thoan Do 01/03/2020 12:18 AJAY's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft AJAY OTTA 01/03/2020 07:17 Gerrit's copy of MATH6058 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Gerrit Wijns 31/03/2020 22:35 Musa's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Musa Mammadov 17/04/2020 20:29 Musa's copy of 3 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Musa Mammadov 08/05/2020 01:37 Musa's copy of 3 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Musa Mammadov 12/05/2020 08:07 Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ahmed Al-Razaz 22/05/2020 15:43 Ed's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ed Southwood 28/05/2020 15:09 Factorising Quadratic Equations with$x^2$Coefficients of 1 Ready to use John Ian Keng 01/07/2020 15:05 Factorising Quadratic Equations with$x^2$Coefficients of 1 Ready to use Vicky Hall 07/10/2020 12:31 Quadratisches Polynom faktorisieren (3 Aufgabenteile) Ready to use Ulrich Görtz 24/10/2020 11:09 Ashley's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ashley Cusack 16/09/2020 20:06 Faktorisasi Kuadrat dengan a=1 Ready to use Abrari Hasmi 19/09/2020 16:58 Ciara's copy of Factorising Quadratic Equations with$x^2$Coefficients of 1 draft Ciara Fitzpatrick 29/09/2020 19:20 Algebra - Factorising Quadratic Equations with$x^2\$ Coefficients of 1 Ready to use Apodytes-ATG apodytes 25/10/2020 18:53

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