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b.12x²-9x+6-7x²+8x+14=5x²-x+20
a.-2p(7p²+4q)=-14p³-8pq
b.(4x-3)(5x-2)=20x²-8x-15x+6=20x²-23x+6
moga bantu
b. 12x² - 9x + 6 + (-7x² + 8x - 14) = 12x² - 9x + 6 - 7x² + 8x - 14 = 5x² - x - 8
a. -2p (7p² + 4q) = -2p.7p² + (-2p.4q) = -14p³ - 8pq
b. (4x - 3)(5x - 2) = 4x(5x - 2) - 3(5x - 2) = 20x² - 8x - 15x + 6 = 20x² - 23x + 6