Question

multiplicações:
a) 2(3×+4)
b) 3(2ײ-×-3)
c) 4×(2×+5)
d)-2ײ(ײ-×+4)
e) a²b(2a²+ab-b²)
f)3×(ײ-xy+y²)

Answer 1

Resposta:

a) 2(3×+4) = 6x+8

b) 3(2ײ-×-3)=6x²-3x-9

c) 4×(2×+5) =8x²+20x

d)-2ײ(ײ-×+4)=-2x⁴+2x²-8x

e) a²b(2a²+ab-b²) = 2a⁴b+a³b²-b³

f)3×(ײ-xy+y²) = 3x³-3x²y+3xy²