10.2 hmwk. out Multiply the following 1.(2x + 3 )(x – 4) = 2.(3x – 4) 2 = 3.(2x + 1)(2x – 1) = Answers 1.2x 2 – 5x x 2 – 24x x 2 - 1

10.3 multiplying polynomials – 2 special cases when multiplying binomials 1.Product of the sum & difference of 2 binomials. Special: because there will be no middle term, “b” (a + b)(a – b) = a 2 – b 2 (x + 3)(x – 3) = x 2 – 9

2. Square of a binomial Special: middle term is always double what the binomial tells you. (a + b) 2 = a 2 + 2ab + b 2 (2x + 5) 2 (2x) 2 + 2(2x)(5) x x + 25

Try these 1.(5x +2)(5x-2) = 2.(2x – 7) 2 = 3.(3x + 2)(2x + 3) = Answers: 1.25x 2 – 4 2.4x 2 – 28x x x + 6

Homework for tonight Pg. 525 # evens

Chp 7 – 9 test scores (last year) Period 1 Average 76% 4 – A’s 8 – B’s 9 – C’s 6 – D’s 3 – F’s Period 2 Average 72% 2 – A’s 6 – B’s 9 – C’s 4 – D’s 5 – F’s

Chp 7-9 test this year Period 5 80% average A - 5 B - 4 C - 7 D - 3 F - 4 Period 6 81% Average A - 5 B - 8 C - 9 D - 5 F - 2