Question

Solve for x: |2x + 12| = 18 (5 points) x = 3, x = −3 x = 3, x = −15 x = 15, x = −15 x = −3, x = 15

Answer 1

x = 3

x = -15

Explanation:

Use the meaning of absolute value to make this into two equations.

|2x +12| = 18

2x +12 = ±18

x +6 = ±9 . . . . . . divide by 2

x = -6 ±9 . . . . . . subtract 6

x = 3

x = -15