Question

Solve for x: |2x + 6| − 4 = 20

x = 9 and x = 11

x = −9 and x = 15

x = 9 and x = −15

No solution

Answer 1

|2x + 6| - 4 = 20
2x + 6 = 24 & 2x + 6 = -24
2x = 18 & 2x = -30
x = 9 & x = -15
As you can see, you get whatever's in the | x | by itself on one side and set it equal to both the positive and negative solutions. Solve for c.

Answer 2

solve for x*