lola-thomas_60b8dbe946d1b
lola-thomas_60b8dbe946d1b
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a) (x-3) . (x-2) = x²-2x-3x+6 = x²-5x+6 (x+2) . (x+4) = x²+4x+2x+8 = x²+6x+8 (x²-5x+6) . (x²+6x+8) = x elevado a 4 + 6 x³ + 8x² - 5x² - 30x² - 40x + 6x² + 36x + 48 x elevado a 4 + 6 x³ -21x² -4x + 48 Acho q é isso