Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

LilySwanBest ResponseYou've already chosen the best response.1
x: (x  9)^2 = 1 Is your question this one
 one year ago

MertsjBest ResponseYou've already chosen the best response.0
Why is it that you don't answer the people who try to help you?
 one year ago

BMI229Best ResponseYou've already chosen the best response.0
sorry yes that is I read it wrong
 one year ago

LilySwanBest ResponseYou've already chosen the best response.1
x: (x  9)^2 = 1 so this is question
 one year ago

LilySwanBest ResponseYou've already chosen the best response.1
(x  9)^2 = 1 (x  9) (x  9) = 1 Now expand the brackets. (x  9) (x  9) = 1 x^2  18x + 81 = 1 Move the 1 across the equal sign x^2  18x + 81 = 1 x^2  18x + 80 = 0 Factor x^2  18x + 80 = 0 (x  8) (x  10) = 0 x = 8 or 10
 one year ago

LilySwanBest ResponseYou've already chosen the best response.1
i hope this answer satisfies you
 one year ago

electrokidBest ResponseYou've already chosen the best response.0
method 2: \[(x9)^2=1\\ \therefore x9=\pm1\\ \therefore x9=1\qquad\qquad x9=1\\ \therefore x=8\qquad\qquad\qquad x=10 \]
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.