1. Review Write the product of the sum and difference. (x + 3) (x – 3)
Write the square of the binomial as a trinomial
(x + 5)2

2. 10.4 Solve polynomial equations in factored form

3. Notes
Factored form: product of two or more linear factors. Ex: (2x – 3) (x + 5) = 0 Ex: (2x-3)(x+5)(x-7)=0
zero-product property: product of two factors is zero only when at least one of the factors is zero.

4. Use zero product prop. to solve -T
(x + 1) (x + 6) = 0 (c + 7) (c + 2) = 0 (d ) (d )=0
5(m + 4)2 = 0
(t + 4) (t – 4) = 0
(x – 3.2) (x ) = 0

5. Use zero product prop. to solve -sT
(n – 8) (n – 9) = 0 (x ) (x )=0 (x + 9) (x – 8) = 0
(x + 4.2) (x – 4.2) = 0 (x + 5.4) (x – 3) = 0 (y – 6) (y + 6)2 = 0

6. Solve the equation - t (2x + 8)(x + 7) = 0 (2n – 7)(5n + 20) = 0
(5x + 7)(7x – 15) = 0 (3x + 9.3)(4x – 12.8) = 0

7. Solve the equation - st (5y – 1)(2y + 4) = 0 (2x – 5)(9x – 15) = 0
(2c + 8)(5c + 10) = 0 (2x )(2x+ 1 2 )2 = 0

8. Find the x-intercepts and the vertex of the equation. Sketch the graph.
Y = (x – 4)(x + 2)

9. Find the x-intercepts and the vertex of the equation. Sketch the graph.
Y = (x + 1)(x - 5)

10. Wrap up Questions/Comments
Hw: text pg. 600, #’s: evens, 47, 48, 55, 56