Could you help me with this mathswatch question. There is a image of the work

Grandma made an apple pie. josh and his brother joe finished 4/5 of it. then 3 friends came over and shared the left over. how much pie did each friend eat

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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