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1. |
If x1.x2.x3 = 4(4 + x1 + x2 + x3), then what is the value of [1/(2 + x1)] + [1/(2 + x2)] + [1/(2 + x3)]? |
A. | 1 |
B. | 1/2 |
C. | 2 |
D. | 1/3 |
Answer» C. 2 | |