Section 4.3 Solve

California Standard: 21.0: Students graph quadratic functions and know that their roots are the x-intercepts

OBJECTIVE(S): By following instructions, students will be able to: solve quadratic equations.

Example 1: Factor the expression. a) b)

U-TRY#1: Factor the expression. If the expression cannot be factored, say so. c) b) 5

DIFFERENCE OF SQUARES Examples:

Example 2: Factor the expression. a) b) c)

U-TRY#2: Factor the expression. c) b) d) 8

Example 3: What are the roots of the equation ?

Example 4: Find the zeros of the function. a) b)

U-TRY#3: Find the zeros of the function. c) b) 11

HOMEWORK Sec 4.3 WS