Algebra Examples
Tap for more steps…
Tap for more steps…
Yahoo Answers
- 👤 Sign in
- ⚙ Help
- International
Argentina
Australia
Brazil
Canada
France
Germany
India
Indonesia
Italy
Malaysia
Mexico
New Zealand
Philippines
Quebec
Singapore
Taiwan
Hong Kong
Spain
Thailand
UK & Ireland
Vietnam
Espanol
- About
- About Answers
- Community Guidelines
- Leaderboard
- Knowledge Partners
- Points & Levels
- Blog
- Safety Tips
What is the discriminant of 9×2 + 2 = 10x?
A ) –356
B ) –172
C ) 28
D ) 72
Follow
3 answers
3
Answers
Newest
Oldest
- Its C.
First get the equation into the form: Ax^2 + Bx + C = 0 (the quadratic equation)..
We do this by subtracting 10x both sides (to get it on the other side)..
9x^2 + 2 = 10x
9x^2 – 10x + 2 = 10x – 10x
9x^2 – 10x + 2 = 0
Now the discriminant is: b^2 – 4ac
The quadratic equation is Ax^2 + Bx + C = 0
Here, A = 9, B = -10 and C = 2 so plug them in…
(-10)^2 – 4 (9)(2)
= 100 – 4 (18)
= 100 – 72
= 28 <— answer…
So the discriminant is 28 (c).
?
· 4 years ago0Thumbs up
0Thumbs down
Report AbuseCommentAdd a comment
· just now
- 9x^2 – 10x + 2 = 0
The discriminant is b^2 – 4ac
Where
a = 9
b = -10
c = 2
Hence(-10)^2 – 4(9)(2) =
100 – 72 =
28lenpol7
· 4 years ago0Thumbs up
0Thumbs down
Report AbuseCommentAdd a comment
· just now
- First rewrite the equation as
9x^2 – 10x + 2 = 0. Then the
discriminant is (-10)^2 – 4*9*2 = 100 – 72 = 28
– choice C
Robert
· 4 years ago0Thumbs up
0Thumbs down
Report AbuseCommentAdd a comment
· just now
Report Abuse
Additional Details
If you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy
Report Abuse
Additional Details
If you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy
Report Abuse
Additional Details
If you believe your intellectual property has been infringed and would like to file a complaint, please see our Copyright/IP Policy
- Upload failed. Please upload a file larger than 100×100 pixels
- We are experiencing some problems, please try again.
- You can only upload files of type PNG, JPG, or JPEG.
- You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG, or RM.
- You can only upload photos smaller than 5 MB.
- You can only upload videos smaller than 600MB.
- You can only upload a photo (png, jpg, jpeg) or a video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm).
- You can only upload a photo or a video.
- Video should be smaller than <b>600mb/5 minutes</b>
- Photo should be smaller than <b>5mb</b>
- You can only upload a photo.
- Video should be smaller than <b>600mb/5 minutes</b>Photo should be smaller than <b>5mb</b>
Related Questions
Answer Questions
Trending
- Terms
- Privacy
- AdChoices
- RSS
archive.today webpage capture | Saved from | ||
All snapshots | from host brainly.com | ||
Webpage Screenshot | |||
share download .zip report error or abuse |
Log in
Join now
High School
·
Mathematics
·
10 points
What is the discriminant of 9×2 + 2 = 10x?
a. -356
b.–172
c.28
d. 72
Ask for details
·
Follow
·
Report
by
missthothoe77