AB = {Bx<span> - A</span>x; By<span> - A</span>y<span>} = {-1 - (-3); -2 - 2} = {2; -4} </span>
Х=-2; 3-4*(-2)=3+8=11
х=-1; 3-4*(-1)=3+4=7
х=0; 3
х=1; 3-4*1=3-4=-1
х=2; 3-4*2=3-8=-5
ответ: {-5;-1;3;7;11}
15z^2+9z-10z-6-14z^2-4z+7z+2=4
z^2+2z-4=-4
z^2+2z=0
z(z+2)=0
z=0 или z+2=0
z=-2