How do you factor $4x^2-20x 125$ ?

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Answer 1 · 2015-06-07T09:19:09

$4x²=color(blue)(4x)*color(red)x$
$20x*125=color(blue)(4x)*color(purple)(5*125)=color(blue)(4x)*color(purple)625$

Thus :

$=color(blue)(4x)*(color(red)x-color(purple)625)$

How do you factor 4x^2-20x 1254x^2-20x 125?