How do you factor $4(s^2 - 20s + 96s - 135)$ ?

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Answer 1 · 2017-06-12T11:08:36

$4s^2+304s-540$

$4(s^2-20s+96s-135)$

$:.=4s^2-80s+384s-540$

$:.=4s^2+304s-540$

How do you factor 4(s^2 - 20s + 96s - 135)4(s^2 - 20s + 96s - 135)?