Question

Solve each equation 2x^2-6=42

Answer 1

You said that 2x² - 6 = 42

Add 6 to each side: 2x² = 48

Divide each side by 2 : x² = 24

Take the square root of each side:

x = √24

x = +4.9 (rounded)
and
x = -4.9 (rounded)