I want the answer please

Empty box + box + empty box fill in the box is equal to 30 how

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

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box