CPM Homework Banner

Home > PC > Chapter 9 > Lesson 9.3.5 > Problem 9-160

9-160.
  1. No Calculator icon Solve for x in the simplest manner (no calculator or Quadratic Formula). Homework Help ✎

    1. 5x2 = 15x

    2. 2(x − 6)2 + 5 = 23

1. Do NOT divide both sides by x. This will eliminate one of your two answers.
2. Instead, move all terms to one side and set = to 0
Factor. Solve.

2(x − 6)2 = 18
(x − 6)2 = 9
x − 6 = ± 3
x = ±3 + 6
x = 9 x = 3