Solve:
5 = 4r(2r + 3)

is the answer -3 ±√ 19
4

Question

Solve: 
5 = 4r(2r + 3)

is the answer -3 ±√ 19 
4

anonymous · Answer

5=8r squared + 12r

anonymous · Answer

do u need the working?????

anonymous · Answer

wait how did you get that?

anonymous · Answer

yes if my answer is wrong

anonymous · Answer

5=8r^2 + 12r
or
8r^2 + 12r - 5 = 0

then use quadratic formula

u get 
       - 12 +/- 4r00t19
r = ----------------
                 16

simplify to get the two roots

anonymous · Answer

- 3 + root19               - 3 - root19
  r = ------------    and -------------
                  4                                   4

anonymous · Answer

so i was right !! thanks

anonymous · Answer

so I guess u had done it right....

anonymous · Answer

thanks i was a lil worried when they said it was 5r=8srt12

anonymous · Answer

oh, he had just resolved the bracket and did not proceed any further......

anonymous · Answer

Thank You So Much ... I mean I know how to do them for the most part i just need someone to help check my answers

anonymous · Answer

u r welcome