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a) (2x-3) (x^2-2x-1)= b) 3-4x(-x^2+8x-3) =​

Răspuns :

Răspuns:

Salutare!

a) (2x - 3)(x² - 2x - 1)

2x × (x² - 2x - 1) - 3(x² - 2x - 1)

2x³ - 4x² - 2x - 3x² + 6x + 3

2x³ - 7x² + 4x + 3

b) 3 - 4x(- x² + 8x - 3) = 3 + 4x³ - 32x² + 12x

4x³ - 32x² + 12x + 3