What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve.
a. x =...
![subject](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 04:30 audreymvarney
What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve.
a. x = 1 and x = 2sqrt2
b. x=+/-1 and x = +/-2sqrt2
c. x=+/-i and x = +/-2isqrt5
d. x = +/-i and x=2sqrt2
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:30
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?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 10.10.2019 01:10
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.10.2019 01:10
![question](/tpl/images/cats/istoriya.png)
History, 10.10.2019 01:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.10.2019 01:10
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 10.10.2019 01:10