Question

a) (2x+3) × (3x+4)

b) (x2-2) × (x+3x-1)

poderiam me ajudar?

Answer 1

Resoluções

(2x + 3).(3x + 4)
2x.(3x + 4) + 3.(3x + 4)
6x² + 8x + 9x + 12
6x² + 17x + 12

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(x² - 2).(x + 3x - 1)
(x² - 2).(4x - 1)
x².(4x - 1) - 2.(4x - 1)
4x³ - x² - 8x + 2