MCQOPTIONS
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| 1. |
If x is a rational number and (x+1)3−(x−1)3(x+1)2−(x−1)2(x+1)3−(x−1)3(x+1)2−(x−1)2 = 2, then the sum of numerator and denominator of x is? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 7 |
| Answer» B. 4 | |