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12. Factorisation
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Q1 of 105 Page 280

Find the errors and correct the following mathematical sentences

(x – 4) (x – 2) = x2 – 8

If LHS is


(x – 4) (x – 2)


Then RHS would be


⇒ (x – 4) (x – 2)


= x2 – 4 × x – 2 × x + (-2) × (-4)


= x2 – 4x – 2x + 8


= x2 – 6x + 8


The error is x2 – 6x + 8 instead of x2 – 8


Hence (x – 4) (x – 2) = x2 – 6x + 8


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Questions · 105
12. Factorisation
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