-4+2t-t²=3t-4t²
-t²+4t²+2t-3t-4=0
3t²-t-4=0
D= (-1)²-4*(-4)*3=1+48=49
√D= 7
t1 = (1+7)/6 = 4/3
t2= (1-7)/6 = - 1
х1= 3*4/3-4(4/3)² = -29/8
х2= 3*(-1)-4*(-1)²= -7
-4+2t-t²=3t-4t²
-t²+4t²+2t-3t-4=0
3t²-t-4=0
D= (-1)²-4*(-4)*3=1+48=49
√D= 7
t1 = (1+7)/6 = 4/3
t2= (1-7)/6 = - 1
х1= 3*4/3-4(4/3)² = -29/8
х2= 3*(-1)-4*(-1)²= -7