Question

if x2+y2 = 7xy find [x2/y2] +[ y2/x2]​

Answer 1

Step-by-step explanation:

Sq. on both sides-

x⁴+y⁴+2x²y²=49x²y²

x⁴+y⁴=49x²y²-2x²y²

x⁴+y⁴=47x²y²

(x⁴/x²y²) +(y⁴/x²y²) =47

(x²/y²) +(y²/x²) =47