Question

Please show all work. solve for the variable. x2−8=−1

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)

Answer 2

`x^(2) -8=-1`

`x^(2) = -1 + 8`

`x^(2) = 7`

x = ±
`√(7)`