Question
Find the factors of the polynomials given below: $2 x^2+x-1$
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Answer
$2 x^2+x-1$
$=2 x^2+2 x-x-1$
$=2 x(x+1)-1(x+1)$
$=(x+1)(2 x-1)$
$=2 x^2+2 x-x-1$
$=2 x(x+1)-1(x+1)$
$=(x+1)(2 x-1)$
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