How do you factor the expression $40p^2-13p-36$ ?

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Answer 1 · 2016-02-16T18:04:15

It is $(5p+4)(8p-9)$

You can factor this as follows just remember that $13=45-32$ hence
we have that

$40p^2-(45-32)*p-36=40p^2-45*p+32*p-36= 5p*(8p-9)+4*(8p-9)=(5p+4)*(8*p-9)$

How do you factor the expression 40p^2-13p-3640p^2-13p-36?