Question

Solve the equation using square roots:
2x^2-17=15

Answer 1

x = 4 or x = –4

Explanation:

2x² – 17 = 15

Add 17 to both sides:

2x² = 32

Divide both sides by 2:

x² = 16

Take the square root:

√x² = √16

Simplify:

x = ±4

Therefore:

x = 4 or x = –4