Question

Factor completely: 3x2 + 10x + 3

Prime

(3x + 3)(x + 1)

(3x + 1)(x + 3)

(3x − 1)(x − 3)

Answer 1

(3x + 1)(x + 3). This is easy to check by multiplying them out.

Answer 2

but you didn't even try to work out a solution

Answer 3

(3x + 1)(x + 3) = 3x^2 + 9x + x + 3. Which simplifies to 3x^2 + 10x +3

Answer 4

since you like giving out answers -
coocoo and bird each start with $2013 and are flipping a fair coin. When the coin comes up heads coocoo pays bird $1 and when the coin comes up tails bird pays coocoo $1. Let f(n) be the number of dollars coocoo is ahead of his starting amount after n flips. Compute the expected value of max{f(0),f(1),f(2),...,f(2013)}.