Relate what you know about simplifying expressions to what you know about factoring. For example, before you can factor 12x + 20y + y, you need to simplify it.
Explain why. Then factor it.

Simplify the expression 10/11(22z) + (a+5) -1

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick