Question

Use suitable identities to find the product
(x+5)(x+2)

Answer 1

x^2+2x+5x+10

x^2+7x+10

Answer 2

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» (x+5)(x+2)

›Using (x+a)(x+b) = x²+(a+b)x+ab‹

» x²+(5+2)x+(5)(2)

»» x²+7x+10 ««

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