Question

1) Efetue os monômios:
a) (−10x) + (+6x) = ______
b) (8x²y) + (−5x²y) = ______
c) (−2ab) + (−10ab) = ______
d) (−5xy) + (−3xy) = ______
e) (−9ay) –(−3ay) = ______
f) (2a³) – ( −5a³) = ______
g) −4xy+6xy−5xy= ______
h) 5a³ + 7 a³ −9 a³ + 3 a³ = ______
i) −3x−5x+2x−x+4x = ______

me ajudem pfvr ;-;

Answer 1

Monômios são soma com a base igual, então preserva a base e soma os expoentes.

A) (-10x)+(+6x) =  -4x

b) (8x²y) + (−5x²y) = 3x²y

c) (−2ab) + (−10ab) = -12ab

d) (−5xy) + (−3xy) = -8xy

e) (−9ay) –(−3ay) = -6ay

f) (2a³) – ( −5a³) = 7a³

g) −4xy+6xy−5xy= -3xy

h) 5a³ + 7 a³ −9 a³ + 3 a³ =(5+7-9+3)a³= 6a³

i) −3x−5x+2x−x+4x =(-3-5+2-1+4)x=-3x