Answer:
Step-by-step explanation:
a)
( 2*12 ) * ( 2*11)
[tex]2^{2}[/tex] *12 *11
[tex]2^{2}[/tex] * 132
2 * 2 * 132
2* 264
528
b)
(-5) *8 / (-5)*3
the (-5)s cancel out, then it's just
8/3 or [tex]2^{3}[/tex] / 3
c)
((-9)*2)*3
(-([tex]3^{2}[/tex])*2)*3
-([tex]3^{3}[/tex]) *2
-27*2
-54
