Question

How do you solve `36x^2 - 140 = 4`?

Answer 1

`x=+-2`

Explanation:

`36x^2-140=4`
or
`36x^2=140+4`
or
`36x^2=144`
or
`x^2=144/36`
or
`x^2=4`
or
`x=sqrt4`
or
`x=+-2`