1.If X=1+a/1-a and Y=1-a/1+a then find X2+Y2+XY 2.Reduce the following rational expression to their lowest terms i)16 x2-(x2-9)2/4x+9-x2

Asked by  | 24th May, 2012, 11:28: AM

Expert Answer:

Answered by  | 24th May, 2012, 10:24: PM

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