4/19/2007 Period 4 (8th graders)

Hello 8th graders
Today we learned about special products of polynomials.
Remember there are 3 cases

case 1: (a+b)^2 = a^2 + 2ab + b^2 example: (x+4)^2 = x^2 + 2(4x)+16 = x^2 + 8x + 16
case 2: (a-b)^2 = a^2 -2ab + b^2 example: (x-4) ^2 = x^2 - 2(4x) +16 = x^2 -8x + 16
case 3: (a+b)(a-b) = a^2 - b^2 example: (x+4)(x-4) = x^2 - 16


Your homework is page 593 #16-38 all