Answer this question for 20 points and brainliest!

Can someone me out here number 4 plz

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe