Our lesson today covered polynomial vocabulary. Then we again found sums and differences with polynomials. This builds on yesterday's lesson with the tiles, but we just used symbols today. Remember, for subtraction problems we change it to addition and change all signs in the second polynomial. This step distributes the minus through the second polynomial. To add the polynomails, collect like terms. Do NOT change the value of the exponent!
Examples:
(4x2 + 5x - 8) + (2x2 - 3x - 4)
= 6x2 + 2x - 12
(9x2 - 2x - 5) - (7x2 - 6x + 4)
= (9x2 - 2x - 5) + (-7x2 + 6x - 4)
= 2x2 + 4x - 9
Homework: Page 61: #1 - 14 and Page 62: #14 - 19
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