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you got a mistake in the 4 in the end... its not -4, its a^2-4a+4=(a-2)^2...
hi $\displaystyle \frac{a^2-4a+4}{2(a+2)(a-2)}=\frac{(a-2)^2}{2(a+2)(a-2) }=\frac{(a-2)}{2(a+2)}$
Originally Posted by klik11 next time double check your answer.
I will
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