Write an example of an expression that cannot be simplified, and explain how you know that it cannot be simplified.

Can (2,3 and square root 10) be sides ona right triangle?

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

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?