Warm-Up 1. Find the -Vertex -Y-Intercept -X-intercepts 2. Graph 3. Factor.

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Presentation transcript:

Warm-Up 1. Find the -Vertex -Y-Intercept -X-intercepts 2. Graph 3. Factor

HW Answers

Unit 2 Section 3 FINDING X-INTERCEPTS, ZEROS, ROOTS

How to find the X-Intercept To find the x-intercept(s) replace y with 0 (y = 0) and solve for x. Usually requires factoring and Zero Product Property Zero Product Property: If the product of two or more numbers is ZERO then One or more of the numbers must be ZERO.

Methods for solving (1)GCF (2)Difference of two squares (3)Perfect square trinomials (4)Trinomials (1)a = 1 (2)a ≠ 1 (5)Taking the square root (6)Completing the square (7)Quadratic formula

(2) Difference of two squares

(3) Perfect Square

(4) Factoring (a = 1)

(4) Factoring (a ≠ 1)

Practice p. 261#65-79 odd

(5) Taking the square root

Practice p. 267 #51-57;61-67 odd