Question

A professora escreveu a seguinte expressão no quadro negro:

$m = (7 ^{10} ) ^{5} \div 7 ^{48}$
então, o valor de M é:

a) 2
b) 49
c) 14
d) 0​

Answer 1

Resposta:

c) 14

Explicação passo-a-passo:

7x10= 70

$70^{5}$=350

----------

$7^{48}$=336

350-336=14

Answer 2

$\sf \displaystyle M=\frac{\left(7^1^0\right)^5}{7^4^8}\\\\\\\sf =\frac{7^{50}}{7^{48}}\\\\\\\sf M=7^2\\\\\\\sf 7\cdot7=49\\\\\\\sf \to \boxed{\sf M=49}$

OK?

Certo?

Kevin Davi