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Question

Reduce the expression y=x2x+1x2+x+1 to the form ax2+bx+c and give condition for x to be real.


A

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B

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C

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D

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Solution

The correct option is B


y=x2x+1x2+x+1 x2(y1)+x(y+1)+(y1) = 0

This is in the form of ax2+bx+c=0

Condition for x to be real is D 0

b24ac0

(y+1)24(y1)20


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