Please help me... The question is in the picture.
The first choices
Triangle
square
rectangle
pentagon
Second choices for second drop down menu
36
48
72
96

What is x3+3x2−16x−48 divided by x−1?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a