Math 18 - Please show work to help!

label Algebra
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schedule 1 Day
account_balance_wallet $5

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

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Oct 10th, 2015
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Oct 10th, 2015
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