Funtion that associates a real number with each element in tge sample space

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

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

How do you do the foil method with polynomials?