Julie's copy of Solving Quadratic Equations

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Julie Crowley

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3 years, 10 months ago

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Julie Crowley 3 years, 10 months ago

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Julie Crowley 3 years, 10 months ago

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Julie Crowley 3 years, 10 months ago

Created this as a copy of Solving Quadratic Equations.

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Question statement

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	1
c	integer	4
b	integer	1
d	integer	5
g	integer	7
f	integer	2

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(1..3)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

→ Used by:

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Gap 0. Number entry
  Add
2. Gap Gap 1. Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

Solve the following quadratic equation for $x$ :

$\simplify{x^2 - ({f}+{g})x +{f}{g}}=0.$

The smaller root is: Gap 0., The larger root is: Gap 1..

Advice

Solve the following quadratic equation for $x$ :

$\simplify{x^2 - ({f}+{g})x +{f}{g}}=0.$

We want two numbers that multiply together to give $\simplify {{f}{g}}$ and add together to give $\simplify{-{{f}+{g}}}$

$(x+\Box )(x +\Box )=0$

$\simplify{(x+{f})(x+{g})}=0$

Thus,

$\simplify{(x+{f})}=0$ and so $x=\simplify{-{f}}$

$\simplify{(x+{g})}=0$ and so $x=\simplify{-{g}}$

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is used in the following exam:

2021 week 8 by Norah Storey in Norah's workspace.

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

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Julie's copy of Solving Quadratic Equations

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Julie Crowley 3 years, 10 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`