Which of the following does not have a GCF of 3x^2 6x^3−3x26 x cubed minus 3 x squared

3x^5+18x^2 x to the 5th power plus 18 x squared

3(x^2+5x^3)3 times open paren x squared plus 5 x cubed close paren

3x+21x^3

How is working backward similar to solving an equation?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

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.