If x + (4/x) - 4 = 0, then the value of x2 - 4 is equal to:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 0.
| Understanding/Application |
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x + (4/x) - 4 = 0 Multiplying by x - x2 - 4x + 4 = 0 (x - 2)2 = 0 x - 2 = 0 |
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x = 2 x2 - 4 = 4 - 4 = 0 |