karthikpandian19 wrote:XY problem refer IMAGE
Let y=1.
Then:
x = √(4x(1) - 4*1²)
x = √(4x - 4)
x² = 4x-4
x²-4x+4 = 0
(x-2)(x-2) = 0
x=2. This is our target.
Now we plug y=1 into the answers to see which yield our target of 2.
Only answer choice
A works:
2y = 2(1) = 2.
The correct answer is
A.
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