Question

O valor da expressão
d) 4
c) 3
b) 2
a) 1​

Answer 1

Resposta:

$\ \ \ \big\{ (30-2^3\cdot3)^2:[21-(7^3-5^2\cdot13)]\div \big(3^2-\sqrt{36}\big)\big\}\\= \big\{ (30-8\cdot3)^2:[21-(343-25\cdot13)] \div \big(9-6\big)\big\}\\= \big\{ (30-24)^2:[21-(343-325)] \div 3\big\}\\= \big\{6^2:[21-18] \div 3\big\}\\= \big\{36:3 \div 3\big\}\\= \big\{12\div 3\big\}\\= 4$

Explicação passo-a-passo: