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Substitute - 2 for a and 4 for b.
1/2
To evaluate the given expression for a = - 2 and b = 4, we will substitute these values into the expression and simplify as much as possible.
a= -2, b= 4
a^(- m)=1/a^m
Split into factors
a^(m* n)=(a^m)^n
(- a)^2=a^2
Calculate power
1/b* a = a/b
a/a=1
Multiply
