Nikky C.

asked • 07/17/14

Use 4r^2-28r=49 to answer problems

1. Solve by completing square
2. Use the discriminant to find the number of unique real solutions
3. Solve with quadratic formula

2 Answers By Expert Tutors

By:

SURENDRA K. answered • 07/17/14

An experienced,patient & hardworking tutor

Nikky C.

thanks so much the help is very appreciated!
Report

07/18/14

Philip P. answered • 07/17/14

Affordable, Experienced, and Patient Algebra Tutor

SURENDRA K.

Hello Philip,
Yes, as per my methods,
I should have taken
2r-7= -9.899
r= -2.899
r= -1.4495
Report

07/17/14

Philip P.

Hi Surrendra,
 
No problem.  I am the one who "liked" your answer since you posted a few minutes before I posted (not to mention that I made an error in my initial post).  I subsequently revised my answer because I realized there is an exact solution without rounding decimals.
 
v/r, Phil
Report

07/17/14

Nikky C.

Thankyou for taking your time out to help me it means a lot!
Report

07/18/14

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.