Factor $$ 5+7(a+1) -6(a+1)^2 $$

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Uniteasy Admin · Accepted Answer

Let $$b = a+1$$
The original expression is converted to 
$$ 5+7(a+1) -6(a+1)^2 $$
$$=5+7b-6b^2$$
$$=-(6b^2-7b-5)$$
$$=-(2b+1)(3b-5) $$
$$= (2b+1)( 5-3b)$$

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