Question

x- 5/x = 3x – 9 is this a quadratic equation show how?

Answer 1

Answer:

2x^2-9x+5 this is the eq

Answer 2

$x - \frac{5}{x} = 3x - 9 \\ \frac{ {x}^{2} - 5 }{x} = 3x - 9 \\ {x}^{2} - 5 = x(3x - 9) \\ {x}^{2} - 5 = {3x}^{2} - 9x$

${x}^{2} - {3x}^{2} + 9x = 5 \\ { - 2x}^{2} + 9x - 5 = 0 \\ - 1( - 2x {}^{2} + 9x - 5) \\ = {2x}^{2} - 9x + 5$

$we \: proved \: that \: x - \frac{5}{x} = 3x - 9 \\ is \: a \: quadatic \: equation$