Heyyo, can i get some ?
to complete the square, how do you find the value that must be added to the expression to make a perfect square trinomial?
what is the value? x^2 + 2/5x + ?

a)square 2/5 and add to both sides; 4/25
b)take half of 2/5 and add to both sides; 1/5
c)square half of 2/5 and add to both sides; 1/25
d)take half of 2/5 and add the opposite to both sides; −1/5

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.