4x squared minus 32 equals 4?

Answer 1

I assume you're solving for x in the following equation:

4x2 - 32 = 4

To find the solution, start by adding 32 to both sides, so that the constant is on the right:

4x2 = 36

Next, divide both sides by 4, so you have x alone on the left side:

x2 = 9

So, x is going to be the square root of 9. Since x2 = (-x)2, there are two solutions: one positive, and one negative. 3 squared equals 9, so the two answers are -3 and 3.