Question

How do you factor the expression `5x^2 + 20x +20`?

Answer 1

`5x^2+20x+20` `=5(x+2)^2`

Explanation:

`5x^2+20x+20`
`=5(x^2+4x+4)`
`=5{(x^2+2x+2x+4)}`
`=5{x(x+2)+2(x+2)}`
`5{(x+2)(x+2)}`
`=5(x+2)^2`