Question

expressão (-3)² -(-3)³ -[(-10)².(+5)+(-6+4)5:(-4)-3]

Answer 1

$(-3).(-3)-(-3).-(-3).-(-3)-[(-10).(-10).5+(-2).5:-4-3]$
$9+27-[10.5-10:-4-3]$
$36-[50- 2\frac{1}{2}-3]$
$36-[ \frac{100-2-6}{2}]$
$36- \frac{92}{2}$
$36-46 = -10$