Question

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

Answer 1

$x^{2} -8=-1$

$x^{2} = -1 + 8$

$x^{2} = 7$

x = ±$\sqrt{7}$

Answer 2

Answer:

x = ±sqrt(7)

Step-by-step 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)