x+y=11,xy=30 then x²+y²
abhishekraj12:
why am I not giving my answer
Answer is 61
can't you see my answer
I saw ur answer but my answer is not being posted
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(x+y) =11
sqaure on both sides,
x^2 +y^2 + 2(xy)=11^2
x^2 +y^2 +(2*30)=121
x^2 +y^2 = 121-60
x^2 +y^2 = 61
sqaure on both sides,
x^2 +y^2 + 2(xy)=11^2
x^2 +y^2 +(2*30)=121
x^2 +y^2 = 121-60
x^2 +y^2 = 61
I know the answer very well but I couldn't post my answer why
Answered by
5
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