Question

Resolva as expressões abaixo:
7x + 37x + 21x = b) -b . (b)²= c) c – 2c + 10c= d) 3g² . 2g =​

Answer 1

A)

$7x+37x+21x$

Somar os elementos similares

$7x+37x+21x=65x$

B)

$-b \cdot (b)^{2} \\\\=-b^{1+2}\\\\=-b^3$

C)

$c-2c+10c$

Somar os elementos similares

$c-2c+10c=9c$

D

$3g^2\cdot \:2g$

Aplicar as propriedades dos expoentes  $a^b\cdot \:a^c=a^{b+c}$

$=3g^{2+1}\cdot \:2\\\\=3g^3\cdot \:2\\\\=6g^3$