How do you find the product of $(2x-9)(2x+4)$ ?

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Answer 1 · 2016-07-13T09:43:46

$2x^2-10x-36$

Given -

$(2x-9)(2x+4)$

$(2x xx2x)-(9xx2x)+(2x xx4)-(9xx4)$
$2x^2-18x+8x-36$
$2x^2-10x-36$

How do you find the product of (2x-9)(2x+4)(2x-9)(2x+4)?