Question

How do you solve `3x^2 + 3 = 51`?

Answer 1

`color(brown)(x = =4, -4`

Explanation:

`3x^2 + 3 = 51`

`3x^2 = 51 - 3 = 48`

`x^2 = 48/3 = 16`

`color(brown)(x = +- sqrt(16) = +- 4`