What is the vertex of the quadratic function f(x)=(x-8)(x-2)

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]