3Y^2 + 4Y = 0
Y * ( 3Y + 4 ) = 0
============
Y = 0
3Y + 4 = 0
3Y = ( - 4 )
Y = ( - 4/3 ) = ( - 1 1/3 )
==========
ОТВЕТ 0 и ( - 1 1/3 )
=================
A^2 + 11A + 24
D = 121 - 4*1*24 = 121 - 96 = 25
V D = 5
A1 = ( - 11 + 5 ) : 2 = ( - 3 )
A2 = ( - 8 )
=============
A^2 + 11A + 24 = ( A + 3) * ( A + 8 )
===============