Question

Solve for the variable x^2 - 8 = -1 Show all work please

Answer 1

x = ±sqrt(7)

Explanation:

x^2 - 8 = -1

Add 8 to each side

x^2 - 8+8 = -1+8

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)