Question

- Calcule as multiplicações a seguir:

a) -2.(+5x)= c) 3x².(–x) = e) (–9x²).(–5x) =

b) (2ab).(+4a) = d) (–4x).(+8x)= f) (y²).(5y²) =

- Efetue as multiplicações:

a) (–3x).(+2x).(–x) =

b) (–x²).(5x²).(–2) =

c) (–a).(–a).(–a) =

d) 8x.(-9x). x =

e) -10.(2x).(-3x).(2x) =

f) 6x.(-2x²).(-xy) =

Answer 1

Respostas:

a) -10x         c) -3x³           e) 45x³

b) 8a²b        d) -32x²        f) 5y^4

- Efetue as multiplicações:

a) (–3x).(+2x).(–x) = 6x³

b) (–x²).(5x²).(–2) = 10x³

c) (–a).(–a).(–a) = -a³  

d) 8x.(-9x). x = -72x³  

e) -10.(2x).(-3x).(2x) = -120x³  

f) 6x.(-2x²).(-xy) = 12yx^4