Question

5 /y+y-5/y+3 помогите мне пожалуйста

Answer 1

$frac{5}{y} + frac{y-5}{y+3} = frac{5 (y+3)}{y(y+3)} +frac{y(y-5)}{y(y+3)} = frac{(5y + 15) +(y^{2} -5y)}{y^{2}+3y} = frac{5y + 15 + y^{2} -5y}{y^{2}+3y } =frac{15+y^{2} }{y^{2}+3y } = 0$

15+y² = 0

y² = -15

y = $sqrt{-15}$

∅