Compute the value of the discriminant and give the number of real solutions of the quadratic equation. -2x^2+8x-1=0

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Is there a direction u in which the rate of change of f(x, y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)