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$\\simplify{x^2 - {x0 + x1}x + {x0*x1}}$

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$\\simplify{x^2 - {x2 + x3}x + {x2*x3}}$

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$\\simplify{x^2 - {x4 + x5}x + {x4*x5}}$

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$\\simplify{x^2 - {x6 + x7}x + {x6*x7}}$

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Factorise the following quadratic equations.

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