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Question

If 2y2+x4=0 and x2=y2, then the value of x is

A
1
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B
2
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C
3
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D
4
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E
5
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Solution

The correct option is B 2
Given that 2y2+x4=0 and x2=y2
Substituting above we get,
2y2+x4=0
2×x2+x4=02x4=0x=2

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