What is the product? (9t--4) a) -81t^2-16 b)-81t^2+16 c)-81t^2 - 72t+16 d)-81t^2 +72t+16

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.