# 1.(ii) Use suitable identities to find the following product:   (ii)    $(x+8)(x-10)$

G Gautam harsolia

We will use identity

$(x+a)(x+b)=x^2+(a+b)x+ab$

Put   $a = 8 \ \ and \ \ b = -10$

$(x+8)(x-10)= x^2+(-10+8)x+8\times (-10)$

$= x^2-2x-80$

Therefore, $(x+8)(x-10)$  is equal to  $x^2-2x-80$

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