How can you simplify x2+ 2x-35/x2+-21
O Divide the numerator and denominator by (x - 21).
Divide the numerator and denominator by (x + 7).
Divide the numerator and denominator by (x-3).
O Divide the numerator and denominator by (x – 5).

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.