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1. |
If x = [√(a + 2b) + √(a - 2b)]/[√(a + 2b) - √(a - 2b)], then bx2 - ax + b is equal to (given that b ≠ 0) |
A. | 0 |
B. | 1 |
C. | ab |
D. | 2ab |
Answer» B. 1 | |