Question

Решите уравнение 3x²-x-4=0

Answer 1

D=b²-4ac=1+4X4X3=49    √D=√49=7     a=3  b=-1   c=-4

x=-b+√D /2a=1+7 /6=8/6=4/3=1 1/3
x=-b-√D/2a=1-7/6=-6:6=-1