Решите неравенство (4-y)(y+4)+y(5+y)>6y-20

Question

Решите неравенство (4-y)(y+4)+y(5+y)>6y-20

Answer 1

4y+16-y^2-4y+5y+y^2>6y-20.
5y-6y>-20-16.
-y>-36|•-1.
y<36.