Lesson 12.2 AIM: Simplifying Rational Expressions

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Lesson 12.2 AIM: Simplifying Rational Expressions Do Now: Factor the difference of squares. 4x2 - 25y4 (2x + 5y2)(2x - 5y2)

Do Now Complete the Pre Test that you picked up in front of the room. You will have 10 minutes to complete the assessment.

Step 1: Factor the numerator. x2 - 6x - 16 What pair of factors multiply to -16? (2, -8) (-2, 8) (-4, 4) (-1, 16) (1, -16) Which pair adds to -6? (2, -8) Correct Form (x + 2)(x - 8)

Step 1: Factor the denominator. x2 - 4 What is the square root of x2 and 4 ? x and 2 Correct Form (x + 2)(x - 2)

Cross out terms that are the same in the numerator and denominator.

Step 1: Factor the numerator. x2 - 3x - 28 What pair of factors multiply to -28? (2, -14) (-2, 14) (-4, 7) (4, -7) (1, -28) (-1, 28) Which pair adds to -3? (4, -7) Correct Form (x + 4)(x - 7)

Step 1: Factor the denominator. x2 - 49 What is the square root of x2 and 49 ? x and 7 Correct Form (x + 7)(x - 7)

Cross out terms that are the same in the numerator and denominator.