Question

Tell which method you used plz 4x^2-15=66

Answer 1

x = ±4.5

Explanation:

4x² - 15 = 66

Add 15 to both sides.

4x² = 81

Divide both sides by 4.

x² = 20.25

Take the square root of both sides.

x = ±4.5

Hope this helps!