Question

Use the quadratic formula to find the x-intercepts of the function. Round to the nearest tenth if necessary.
y = -2x2 + 5x - 1
A. {2.3, 0.2}
B. {2.2, -5.8}
C. {-9.2, -0.8}
D. no real solution

Answer 1

\[x =( \pm b \sqrt{b^2 -4ac})/2a\]

a is your x squared term (-2)
b is your x term (5)
c is your constant (-1)

plug these in and solve