Question

X² = 144
I'm confused:(​

Answer 1

Simplifying
x2 = 144

Solving
x2 = 144

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Simplifying
x2 = 144

Take the square root of each side:
x = {-12, 12}

Answer 2

Take the root of both sides and solve.

X = 12, -12