Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
careless850
Group Title
Harry is trying to solve the equation y = 2x^2 − x − 6 using the quadratic formula. He has made an error in one of the steps below. Find the step where Harry went wrong.
 2 years ago
 2 years ago
careless850 Group Title
Harry is trying to solve the equation y = 2x^2 − x − 6 using the quadratic formula. He has made an error in one of the steps below. Find the step where Harry went wrong.
 2 years ago
 2 years ago

This Question is Closed

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
First of all, do you know what the quadratic formula is?
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
I wrote this problem out 6 times, still can't see WHERE he went wrong.
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
What are you corresponding 'a', 'b' and 'c' for this quadratic when you compare it with the standard equation of a quadratic "ax^2 + bx +c=0"?
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
A = 2. B = 1. C = 6.
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
\[1 \pm \sqrt{1^{2}}  4*2*6\]
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
12 * 4 = 48. 1*1 = 1. \[1 \pm \sqrt{148 } \div 2\]
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
So it would be
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
Step 3?
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
STEP 2!!!
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
He + instead of .
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
Should be : \[x = \frac{(1) \pm \sqrt{(1)^2  4 \times 3 \times (6) }{} }{2\times 2 }\]
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
No, it'd be 6.
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
4 * 2 * 6.
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
actually the second step itself ha the error. (1)^2 = 1 and yes that would be 4*2*6 > typo my bad.
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
So, it's step 2, right?
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
I have one more question.
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
And please ask questions in the correct subject forum :)
 2 years ago

apoorvk Group TitleBest ResponseYou've already chosen the best response.1
Sure, just post it as a new one!
 2 years ago

careless850 Group TitleBest ResponseYou've already chosen the best response.1
Oh wow, I didn't realize I was in biology
 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.