solve this question 27 iv part
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Given,
3x-7y=10 and xy=-1
find,
9x²+49y²=?
3x-7y-(9x²+49y²)=4xy
now do it
3x-7y=10 and xy=-1
find,
9x²+49y²=?
3x-7y-(9x²+49y²)=4xy
now do it
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