Question

x squared minus 14 equals 5x plus 67 minus 5x

Answer 1

The awnser is either x = 9 or x = -9

Answer 2

x² - 14 = 5x + 67 - 5x
First, combine like terms. 5x will cancel out with -5x.

x² - 14 = 67
x² = 81
√x² = √81
x = +/- 9

The answer will most likely be 9, but the proper answer is both positive and negative 9.