Question

How do you solve `16x^2 - 64=0`?

Answer 1

`color(blue)(x = +-2`

Explanation:

`16x^2 - 64=0`

Taking out the common term `(16)`:
`16(x^2 - 4)=0`
`x^2 - 4=0`
`x^2 =4`
`x = sqrt4`
`color(blue)(x = +-2`