If 3x-7y=10 and xy=-1 Find 9x^2+49y^2

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If 3x-7y=10 and xy=-1 Find 9x^2+49y^2

If 3x-7y=10 and xy=-1 Find 9x2+49y2
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Sir are you a Indian
I am seeing your videos from 1 year and thought that you are an American 😂😂

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