Cho a ,b là các số hữu tỉ khác 0 thoả man a^3+b^3=2ab
Cm căn của 1-ab là số hữu tỉ

You draw a card at random from a deck that contains 33 black cards and 77 red cards.

Suppose you are analyzing the relationship between time and distance given in a table, and there are 4 values for each quantity. you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer. what can you say about the relationship?

Which expression has a negative value? 2+12 (-) ) -35-5