Question

Calcule o valor das expressões

A) 5-{+3-[(+2)²-(-5)²+6-4]}
B) 15-{-3+[(5-6)².(9-8)²+1]}
C) 18-{6-[-3-(5-4)-(7-9)³]-1}

Answer 1

a) 5-{+3-[4-10+6-4]}
5-{+3-6+2}
5-3+2
2+2
4