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OpenStudy (anonymous):
Rationalize the denominator and simplify. (√(a+1)-2)/(√(a+1)+2)
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OpenStudy (radar):
\[\sqrt{a+1}-2\over \sqrt{a+1}+2\]Multiply numerator and denominator by\[\sqrt{a+1}-2\]getting:\[a-4\sqrt{a+1}+5\over a-3\]
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