48t^2-(12t-4)*(4t+1)=-2
48t^2-(12t*4t+1*4t-4*4t-4*1)=-2
48t^2-(48t^2+4t-16t-4)=-2
48t^2-48t^2-4t+16t+4)=-2
12t+4=-2
12t=-2-4
12t=-6
t=-6/12=-0,5
114z^2+5=(6z+1)(19z+6)
114z^2+5=6z*19z+6*6z+1*19z+1*6
114z^2+5=114z^2+36z+19z+6
114z^2-114z^2-36z-19z=6-5
-55z=1
z=-1/55