Answer:
D) is correct answer .
Step-by-step explanation:
Given : .
To find : Simplify.
Solution : We have given that .
By the exponential rule : .
= .
Therefore, D) is correct answer .
1.-n=-12; n=12
2.18=-2x; x=-9
3.-n=-12; n=12
4.b=3
f(x)= 2x^2-4x
-b=11
Nothing else is equal to a number except its self