Answer:
Given : x-y=7 ; xy=9
Solution:
=》(x-y)^2=x^2+y^2-2xy
=》(7)^2=x^2+y^2-2×9
=》x^2+y^2=49+18
=》x^2+y^2=67
Hence,the value of (x^2+y^2) is 67.
Hope it helped you...
Please mark this as the brainliest answer....
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Answer:
Given : x-y=7 ; xy=9
Solution:
=》(x-y)^2=x^2+y^2-2xy
=》(7)^2=x^2+y^2-2×9
=》x^2+y^2=49+18
=》x^2+y^2=67
Hence,the value of (x^2+y^2) is 67.
Hope it helped you...
Please mark this as the brainliest answer....