Math 18 - Please show work to help!

Algebra
Tutor: None Selected Time limit: 1 Day

Oct 10th, 2015

Hi there! Thank you for the opportunity to help you with your question!

write in standard form 5r^2 - 2r -1 = 0

Then a = 5, b =-2, c = -1

The quadratic formula is [-b +/- squareroot(b^2 -4ac)]/(2a)

Replacing a, b, c:

(2 +/- squareroot(4+20))/10

=2/10 +/- squareroot(24)/10 

=1/5 +/- squareroot(6)/5

Please let me know if you need any clarification. Always glad to help!
Oct 10th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Oct 10th, 2015
...
Oct 10th, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer