Let a ,b,c and d be real numbers such that a > b and c > d Enter the letters of the statements below that must be true:
(A) a + c > b + d
(B) 2a + 3c > 2b + 3d
(C) a - c > b - d
(D) ac > bd
(E) a^2 + c^2 > b^2 + d^2
(F) a^3 + c^3 > b^3 + d^3
I know there is an algebraic way to solve this but I'm not sure. Can you guys help me out? Thanks.
You must be able to work out some of them!
There is no point in anyone answering for you if you do not put ANY effort into the question yourself.
Please no one else answer. You will just stop this person from even attempting to learn anything.