Question

Solve each equation. 5x2 - 55 = 90

Answer 1

x= ± sqrt(29)

Explanation:

5x^2 - 55 = 90

Add 55 to each side

5x^2 - 55+55 = 90+55

5x^2 = 145

Divide each side by 5

5/5x^2 =145/5

x^2 = 29

Take the square root of each side

sqrt(x^2)= ± sqrt(29)

x= ± sqrt(29)