Answer:
- 2x^2 +7x -1 = 0
- b^2 -4ac = 57
Step-by-step explanation:
Subtract 1 to get standard form.
2x^2 +7x -1 = 0
Comparing to ax^2 +bx +c = 0, you see that a=2, b=7, c=-1. Then the value of the discriminant is ...
b^2 -4ac = 7^2 -4(2)(-1) = 49 +8
b^2 -4ac = 57
