[Urgente Matemática/ matéria polinomios ] Efetue:?
a) (3x- 4) (2x²-5x + 1)
b) (x - 1) (x² - 7x+10)
c) (2a² - 5a) (3a² - a)
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a) (3x- 4) (2x²-5x + 1)
b) (x - 1) (x² - 7x+10)
c) (2a² - 5a) (3a² - a)
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Verified answer
a) (3x- 4) (2x²-5x + 1) = 6x^3 - 15x^2 + 3x - 8x^2 + 20x + 4 = 6x^3 - 23x^2 + 23x + 4
b) (x - 1) (x² - 7x+10) = x^3 - 7x^2 + 10x - x^2 + 7x - 10 = x^3 - 8x^2 + 17x - 10
c) (2a² - 5a) (3a² - a) = 6a^4 - 2a^3 - 15a^3 + 5a^2 = 6a^4 - 17a^3 + 5a^2
assim está efectuado. espero ter ajudado