What is the factored form of x2 - 10x + 21? A. (x - 3)(x - 7)
B. (x - 3)(x + 7)
O
C. The expression is already fully factored.
D. x(x - 10) + 21

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?