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b. 9a²b + 4ab - 5a - 8a²b + 3a + 2ab = a²b + 6ab - 2a
c. [2p²q² x (-p³q²)]³ = ³ =
d. (12a³b³ : 4ac³) x 2ab^5 = (3a²b³:c³) x 2ab^5 =
2) a. 8x + 16y + 3x - 9y = 11x + 7y
b. 3(2x - 4y) + [-2 (x+2y)] = 6x - 12y + (-2x) - 4y = 4x -16y
c. -6p³ - 4p² +11p + 6p³ + 4p² - 8p = 0 + 0 + 3p = 3p
d. 2(p-q) + 3(p+6q) = 2p - 2q + 3p + 18q = 5p + 16q
3) a. 7a + 3 - 2a - 6 = 5a - 3
b. 3p² + 4 - (-7p²) - 3 = 10p² + 1
c. 2x² + 3xy - (-x²) + 2xy - 4y² = 3x² + 5xy - 4y²
d. 11(x - 2y) - 4(3x - y) = 11x - 22y - 12x + 4y = -x - 18y