Answer:
-1/16
Step-by-step explanation:
Put the values where the variables are and do the arithmetic.
1 to any power is 1, so you can ignore all of the 'a' factors. That leaves ...
1/(2b^3) = 1/(2(-2)^3) = 1/(2(-8)) = -1/16
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A calculator can help you figure this out.
the answer is 90
I used a calculator so-
1-(-5)/7-2
5/5
1
y2=1
again
5+2
7
second and last are true
