Me ajuda ai galera com o calculo resolver as Expressões ?
a) {25-[20-(5+3)² ÷ 2]}+30
b) 90-[10-(2+2²) ÷ 2]+25
c) {2+[-2-5-6]-5}⁻²
a) {25-[20-(5+3)² ÷ 2]}+30
b) 90-[10-(2+2²) ÷ 2]+25
c) {2+[-2-5-6]-5}⁻²
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Verified answer
a) {25-[20-(5+3)² ÷ 2]}+30
25-[20-(8)² ÷ 2]}+30
25-[20-64 ÷ 2]}+30
25-[20-32]}+30
25-[-12]}+30
25+12+30
67
b) 90-[10-(2+2²) ÷ 2]+25
90-[10-(6) ÷ 2]+25
90-[10-3]+25
90-7+25
108
c) {2+[-2-5-6]-5}⁻²
{2+[-13]-5}⁻²
{2-13-5}⁻²
{-16}⁻²
1
(-16)²
1
256