Evaluate 3
(
3
x
−
y
)
2
−
7
z
for
x
=
2
,
y
=
5
, and
z
=
6
.

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _