Math, asked by tanmaysardar515, 19 hours ago

pls ans of the math
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Answers

Answered by harshb77
0

Step-by-step explanation:

x²+y²=5xy \\  \\ now \\  \frac{x²}{y²}  +  \frac{y²}{x²} \\  =  \frac{ {x}^{4}  +  {y}^{4} }{ {x}^{2} {y}^{2}  } \\  =   \frac{ {(x²)}^{2} +  {(y²)}^{2}  }{(xy)²} \\  =  \frac{(x² + y²)²-2x²y²}{(xy)²}  \\  =  \frac{(5xy)²-2x²y²}{(xy)²}  \\  =  \frac{25x²y²-2x²y2}{x²y²}   \\  =  \frac{23x²y²}{x²y²}  \\  = 23 \\  \\  \\ here \\ i  \: have \:  used \\ (a+b)²=a²+2ab+b² \\ (a+b)²-2ab =  {a}^{2}  +  {b}^{2}  \\ so \: (x + y)^{2}  - 2xy =  {x}^{2}   + {y}^{2}

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