Question

How do you solve `4x^2+7=23`?

Answer 1

see below...

Explanation:

First get the variable on one side and the constant on the other...
Subtract 7 from both sides.

`4x^2 = 16`

Now find `x^2` so divide by 4 on both sides.

`x^2=4`

Now `sqrt` both sides. Remember square rooting gives us a `+-` answer.

`x = +-2`