Question

Efetue as multiplicações:

a) (x4– 3x2– 5x + 1)(– 4x)

b) 4ab(a2+ b2– ab)

c) 4xy2(4x + y + 1)

Answer 1

x

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Answer 2

a) $-4x^{5} +12 x^{3} +20 x^{2} -4x$

b) $4a^{3}b +4ab^{3}-4a^{2}b^{2}$

c) $16x^{2}y^{2}+4xy^{3}+4xy^{2}$