If 3u + 2v = 7 and uv = 2, then the value of (3u - 2v) is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. -1.
If 3u + 2v = 7 and uv = 2
Put u = 1 & v = 2
3 * 1 + 2 * 2 = 7 & 1 * 2 = 2 ( it satisfies the equation)
Then,
The value of (3u - 2v) = 3 * 1 - 2 * 2 = -1