(2/a+b)^2

Assume that a+b = 0

The 0 has a line through it .

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[2/(a+b)]^2

This is a laws of exponents problem. Let's use the identity

[a/b]^n=a^n/b^n

a=2

b=(a+b)

n=2

2^2/(a+b)^2

4/(a+b)^2 <===this is the most simplified version

NOTE: If you were doing this for a harder problem, this is how you would expand the denominator.

Since there is addition in the denominator, you must factor the denominator.

(a+b)(a+b)

a^2+ab+ab+b^2

a^2+2ab+b^2

Therefore the denominator is

4/(a^2+2ab+b^2).

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