Question

15. Si: x + 3 / x= 5 ,halla x^2+9 / x^2

Answer 1

Respuesta:

$\frac{x + 3}{x} = 5 \\ x + 3 = 5x \\ 3 = 5x - x \\ 3 = 4x \\ \frac{3}{4} = x$

$\frac{ { \frac{3}{4} }^{2} + 9 }{ { \frac{3}{4} }^{2} } = \frac{ \frac{9}{16} + 9 }{ \frac{9}{16} } = \frac{ \frac{153}{16} }{ \frac{9}{16} } = \frac{17}{1} = 17$

Ya :)........