Answer:
1
Step-by-step explanation:
The discriminant of the quadratic equation 2x2+4x-7=0 is 1
a b c d
7 , 5 , 9
I hope this helps. I don't know if this is adequate for you, but here
28
4(5*2)-16+4
4(10)-16+4
40-16+4
24+4