Question

(13-1)² ÷ [√64÷2³+(81÷9²-8)-3]+6²

Answer 1

(13-1)² ÷ [√64÷2³+(81÷9²-8)-3]+6² = 
(12)² ÷ [8÷8+(81÷81-8)-3]+36 = 
144 ÷ [1+(1-8)-3]+36 = 
144 ÷ [1+(-7)-3]+36 = 
144 ÷ [1-7-3]+36 = 
144 ÷ [-9]+36 = 
-16 + 36 = 
20

Bons estudos