A quartic function with zeros at x=∓√2,1,-2 and y-intercept 8. y=2x^4+2x^3-8x^2-4x+8

Please help and thank you.

Solve for x and select the correct answer

What is the measure of each of the two angles formed by the bisector of the diagonal of a rhombus if the original angle measures 58 degrees?

What is the volume of a cardboard box that measures 1 inch by 5 inches by 7 inches? the volume of the cardboard is cubic inches. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to the nearest tenth, like this: 42.5