Find the value or values of X in the quadratic equation x2=6x-9.

What is the standard form of -5x^2+2x^4-11+x^3+3x

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?