Question

Скоротити дріб
y²-8y+12
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻*(10-y)
12y-y²-20

Answer 1

$\frac{y^2-8y+12}{12y-y^2-20} *(10-y)= \frac{(y-6)(y-2)}{(10-y)(y-2)} * \frac{10-y}{1} = \frac{y-6}{1} =y-6$