Cos4x=-square root 3 divided by 2

Find the difference (8ab+a+2) - (3ab+6)

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.

X-10/4 when x = –18 a 7 b –2 c –7 d 2