Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
← 55 members online
 0 viewing
talleymarks
Group Title
Determine where f(x) intersects the xaxis. f(x)=(x+10)2−81
 2 years ago
 2 years ago
talleymarks Group Title
Determine where f(x) intersects the xaxis. f(x)=(x+10)2−81
 2 years ago
 2 years ago

This Question is Closed

talleymarks Group TitleBest ResponseYou've already chosen the best response.0
the 2 is supposed to me an exponant...
 2 years ago

sumanth4phy Group TitleBest ResponseYou've already chosen the best response.1
intersecting xaxis implies ycoordinate is zero, therefore eqating f(x)=0 ew get \[0=(x+2)^{2}81\] \[x+2=\pm9\] x=11,7 So the given fuction intersects xaxis at x=7 and x=11
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.0
\[(x+10)^281=0\] \[(x+10)^2=81\] \[x+10=\pm\sqrt{81}=\pm9\] so \(x+10=9\iff x=1\) and \(x+10=9\iff x=19\)
 2 years ago

talleymarks Group TitleBest ResponseYou've already chosen the best response.0
Thank you!
 2 years 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.