A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
how do you complete the square on this
7x^2 + 10x = 2
anonymous
 4 years ago
how do you complete the square on this 7x^2 + 10x = 2

This Question is Closed

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1by keeping your wits about you

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1factor out the 7 on the left and work out the square part

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1\[7x^2+10x=2\] \[7(x^2+\frac{10}{7}x)=2\] \[7(x^2+\frac{10}{7}x+(\frac{10}{14})^2)=2+7(\frac{10}{14})^2\]

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1then I spose we can get rid of that 7 by dividing both sides :)

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1\[x^2+\frac{10}{7}x+(\frac{10}{14})^2=\frac{2}{7}+(\frac{10}{14})^2\] compact the left \[(x+\frac{10}{14})^2=\frac{2}{7}+(\frac{10}{14})^2\] and work the rest thru

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1yes, divide off the 7 first :)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i can get to the point where i get (x = (10/14))^2 = 44/196 but dont know what to do after this

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1you sqrt the sides to unto the ^2 and add off the 10/14

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0is the answer (5+ Sqrt11)14

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1\[\sqrt{(x+\frac{10}{14})^2=\frac{2}{7}+(\frac{10}{14})^2}\] \[x+\frac{10}{14}=\pm\sqrt{\frac{2}{7}+(\frac{10}{14})^2}\] \[x=\frac{10}{14}\pm\sqrt{\frac{2}{7}+(\frac{10}{14})^2}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i mean (5 + sqrt11)/14

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1the sqrt has 2 parts to it a + and a  that has to be accounted for

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1x^2 = 4 x = sqrt(4) x = 2, or 2

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1heres a simple dbl chk http://www.wolframalpha.com/input/?i=7x%5E2+%2B+10x+%3D+2

amistre64
 4 years ago
Best ResponseYou've already chosen the best response.1looks to be a /7 not /14
Ask your own question
Sign UpFind more explanations on OpenStudy
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.