Construct abc given ab=7cm ,bc=9 cm and abc=55 degree

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

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap