Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
kevingretzky
Group Title
use the quadratic formula to find any xintercepts on the graph of the equation.
y=x^2  8x 1
x=?
 one year ago
 one year ago
kevingretzky Group Title
use the quadratic formula to find any xintercepts on the graph of the equation. y=x^2  8x 1 x=?
 one year ago
 one year ago

This Question is Closed

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
set y =0, and solve the quadratic equation
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[x ^{2}8x1=0\]
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
Set a=1, b=8 and c=1 in the QF.
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[x=4+\sqrt{17} or x=4\sqrt{17}\]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
yup exactly
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
you need to use the quadratic formula
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[x=\frac{ b \pm \sqrt{b^24ac} }{ 2a }\]
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
so the final answer would be
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
\[(4+\sqrt{17}, 0) and (4\sqrt{17}, 0)\]
 one year ago

kevingretzky Group TitleBest ResponseYou've already chosen the best response.0
8 square root 68 over 8?
 one year ago

kevingretzky Group TitleBest ResponseYou've already chosen the best response.0
is it over 4?
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
if a =1 yes
 one year ago

kevingretzky Group TitleBest ResponseYou've already chosen the best response.0
so am i right? it is over 4
 one year ago

mathsmind Group TitleBest ResponseYou've already chosen the best response.0
over 2x1
 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.