Question

for what values of k, does the graph of y=-2x^2 + 5x + k not cut the x-axis

Answer 1

when b^2-4ac is negative id assume

Answer 2

set discriminant less than 0 and solve for k

Answer 3

solve for k:
\[5^2-4(-2)k<0\]

Answer 4

-2?

Answer 5

\[k<-\frac{25}{8}\]