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Home > AC > Chapter 11 > Lesson 11.1.5 > Problem 11-64

11-64.
  1. Solve each of the following equations or systems. Homework Help ✎

    1. x2 − 1 = 15

    2. y = 3x − 2
      y = 4x + 3

    3. x2 − 2x − 8 = 0

    4. 2x2 = −x + 7

Add 1 to both sides.

x2 = 16

Solve for x.

x = ± 4

Set the equations equal to each other.

3x − 2 = 4x + 3

Solve for x.

Factor the equation using a generic rectangle.

(x − 4)(x + 2) = 0

Solve for x.

Set the equation equal to zero.

Use the quadratic formula.