Question

calcule os produtos a) x•(-2+xy)
B) 2x³•(6x²+7)
c) xy•(x³-y³)
d)-5m•(m²-4m-2)

Answer 1

x ( -2 + xy ) = - 2x + x²y ***
b
2x³ ( 6x² + 7 ) = 12x⁵ + 14x³  ****
c
xy ( x³ - y³ =  x⁴y - xy⁴ ****
d
-5m (m² -4m - 2)  = - 5m³ + 20m² + 10m ***