Question

b.(+5×).(+4×)=
c.(-2×).(+4×)=
d.(-n).(+6n)=​

Answer 1

Resposta:

b) ( +5x).(+4x) = 5.4.x.x = 20x²

c) (-2x).(+4x) = (-2).(+4).x.x = - 8x²

d) (-n).(+6n) = (-1).(+).n.n = - 6n²

obs: x.x = x¹⁺¹ = x²

bons estudos!