Math, asked by maynihar1iana, 1 year ago

If 9x 2 + 25y 2 = 661 and xy= 10, find ( 5y - 3x) ?

Answers

Answered by Anonymous

3

9x2+25y2-2xy=(5x-3y)2
so,5x-3y=sq root.(661-20)=25.32

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