

MCQOPTIONS
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1. |
What is the answer of ( frac{x^2+y^2+2xy}{x^2-y^2} )? |
A. | (x y) (x + y)<sup>-2</sup> |
B. | (x + y) (x y)<sup>-2</sup> |
C. | (x + y) (x y)<sup>-1</sup> |
D. | (x y) (x + y)<sup>-1</sup> |
Answer» D. (x y) (x + y)<sup>-1</sup> | |