Question

Solve for x, given the equation Square root of x plus 9 − 4 = 1.

Answer 1

√x + 9 - 4 = 1.
√x + 5 = 1
Subtract five from both sides of the equation: √x = -4
x = -16.
Check: -√16 + 9 - 4 = 1
1 = 1

Answer 2

√x + 9 - 4 = 1
√x + 5 = 1
√x = -4
√x = √-4
x = 2i