How to do 314,207 in standard form? ?

Pls , the question is in the picture!

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.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd