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(c) Statement c(d) Statement D1 1 . If x2-2x+1 =-y2 then the value of x2 +y2 +2xy s:(a) 0(b) 1(c) 2(d) 3 |
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Answer» x^2-2x+1=-y^2(x-1)^2=-y^2Perfect squares are positive.So positive not equal to negativeThis is only possible when both sides are 0y=0x-1=0; x=1x^2+y^2+2xy1+0+0=1option b is correct |
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