if 3 x+ 4 Y=9 and xy=5 then find 9x^2+16y^2
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Step-by-step explanation:
(3x)^2 + ( 4y)^2 = ( 3x + 4y )^2 - 2xy
= 81-10
= 71
hope it will help
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hope it will help you.....
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