Give the values of a, b, and c needed to write the equation's standard form. (5 + x)(5 - x) = 7 a = 1; b = 0; c = -18 a = 25; b = 0; c = -1 a = -1; b = 0; c = 25

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys