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


Discussion

No Comment Found