Extra points

write a polynomial function of least degree using the given zeros.

-2, multiplicity of 2, -1+√5.

i am able to get to (x + 2)(x + 2) -> x^2+4x+4

what do i do with the last zero?

what i'm thinking is x = -2+√7 ->

x = -4 + 7 ->

x = 3

is x = 3 the last zero?

Solve the inequality and graph 6j - 7 < 5

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.