Question

а. 25-y^2/5y=0
б. 3x-5/x^2+2=3/x
в. 3/t + 27/t^2- 9t = t-2/t-9

Answer 1

а)25-y^2=0
y=5     y=-5
б)$frac{3x-5}{ x^{2} } +2= frac{3}{x}$
$3x-5+2 x^{2} -3x=0$
$2 x^{2} -5=0$
$x^{2} =2.5$
$x= sqrt{2.5}$
$x=5 sqrt{0.1}$

Answer 2

а можно в