if x+y=9 and xy=20 then the value of x²+y² is
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shrey53:
Thanks a lot tommorow r my exam so I asked and obce again
Your welcome and all the very best for ur exams
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X^2+y^2=(x+y)^2
=(X+y)^2=x^2+y^2+2xy
=(9)^2=x^2+y^2+2(20)
81=x^2+y^2+40
=X^2+y^2=41 ans.
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=(X+y)^2=x^2+y^2+2xy
=(9)^2=x^2+y^2+2(20)
81=x^2+y^2+40
=X^2+y^2=41 ans.
Hope it helps you. Please mark my answer as brainliest and start following me
please mark my answer as brainliest
please mark my answer as brainliest and start following me
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