Question

Sendo A= 22 . 25 e B= 65 : 6³ ,qual é o resultado da sentença A+B: (A) 128 (B) 36 (C)134 (D)164

Answer 1

veja se esta assim:

$A = 2^{2} . 2^{5} \\\\B = \frac{65}{6^{3} }$

$A = 2^{2+5} = 2^{7} = 128\\ \\B = \frac{65}{216}$

$A+B = 128 + \frac{65}{216}\\ \\A+B = \frac{128.216 + 65}{216}\\ \\A+B = \frac{27648 + 65}{216}\\ \\A+B = \frac{27713}{216} \\\\A+B = 128,3$

A + B ≅ 128

RESP: A