Question

26+{[(26-9+3)-raiz quadrada de36÷3+3×18]-66}

Answer 1

$26+[[(26-9+3) - \frac{ \sqrt{36} }{3} + 3*18]-66]$
$26+[(20 - \frac{6 }{3} + 54)-66]$
$26+[(20 -2 + 54)-66]$
$26+(72-66)$
$26-6$
$20$

Answer 2

26+{[(26-9+3)-V36÷3+3×18]-66}
26+{[20-6÷6×18]-66}
26+{[20-1×18]-66}
26+{20-18-66}
26+2-66
28-66
-38

Nao tenho muita certeza mas acho que seja isso.