Question

efetue as operaçoes. A) 2x . (-8a+3)? B) -5b . (-12x+6b)? C) (-14b²+ 28x³) : (-7x)?

Answer 1

Olá,

a)

2x·(-8a+3) =
2x·(-8a)+2x·(3) =
-16xa+6x

Resposta:

-16xa+6x

b)

-5b·(-12x+6b) =
-5b·(-12x)-5b·(6b) =
+60xb-30b²

Resposta:

-30b²+60xb

c)

(-14b²+28x³):(-7x) =
(-14b²):(-7x)+(28x³):(-7x) =
(2b²):(x)+(-4x²) =
-4x²+(2b²):(x)

Resposta:

-4x²+(2b²):(x)