Question

Solve by using quadratic formula:

1. 3x square + x – 3 = 0
2. 3x square – 5x = 4
3. (x+4)(x-3)=0
4. 2x(3x-4)=0

Answer 1

1- x=-1+ square root37/6
2- x=5+square root 73/6

3-x=3,-4 or -4,3

4- x=4/3,0 or 0,4/3