Question

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

Answer 1

`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)`