Question

If a = -2 and b=-1 then a^(-b) - b^a equals (^ raise to power )

Answer 1

Step-by-step explanation:

For explanation, plz see the picture above.

Answer 2

Answer:

The value of the given expression is $a^{-b}-b^{a}=-3$

Step-by-step explanation:

The given values of two variables are $a=-2,b=-1$

We are required to find the value of the given expression based on these both variables which is $a^{-b}-b^{a}$

We shall find the values of both the terms separately and then add them together to obtain final value.This is done as shown below-

$a^{-b}=(-2)^{1}=-2$

Similarly,

$b^{a}=(-1)^{-2}=\frac{1}{1^{2} } =1$

Hence from these two values,we get

$a^{-b}-b^{a}=-2-1=-3$

Therefore,The value of the given expression is $a^{-b}-b^{a}=-3$

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