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Question

2xa+yb=2,xayb=4

A
2a,2b
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B
2a,2b
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C
2a,2b
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D
a2,b2
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Solution

The correct option is B 2a,2b
2xa+yb=2,xayb=4
2bx+ay=2ab, bxay=4ab
Add the two equations,
3bx=6ab
x=2a
Now, 2b(2a)+ay=2ab
ay=2ab
y=2b

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