Question

5. Efetue:
a) (+7x) + (-3x) =
b) (-8x) + (+11x) =
c) (-2y) + (-3y) =
d) (+8x) - (-3x) =
e) (-5x)-(-11x) =
f) (-6y) - (-y)=
6. Calcule:
a) (+5x).(-4x2) =
b) (-2x). (+3x)=
c) (2xb). (4x) =
d) (-5x2).(+5xy) =
E) (-5).(+15x²y) =​

Answer 1

a)4x

b)3x

c)5y

d)11x

e)-6x

f)-5y

6)a)-20x^3

b)-6x^2

c)8x^2b

d)-25x^3y

e)-75x^2y

Answer 2

Resposta:

5-a) (+7x) + (-3x)=  4x

b) (-8x) + (+11x)= 3x

c) (-2y) + (-3y)= -5y

d) (+8x) - (-3x)= 11x

e) (-5x) – (-11x)= 6x

f) (-6y) - (-y)= -5y