Question

r^2+81=r^2=60r+900

Answer 1

r^2: r^2 -60r -900 =0

Answer 2

doesnt make sense really

Answer 3

we can try lol

Answer 4

(r-30)^2 = 900+900

r = 30 +- sqrt(1800)

Answer 5

sqrt(1800) = 30sqrt(2) right?

r = 30(1 +- sqrt(2)) maybe

Answer 6

amistre64, he has posted the same question earlier and I got a different answer:

http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4de40fa04c0e8b0b62caacd8

Answer 7

different is good, cause i dont think mine is right .... i got doubts lol

Answer 8

r^2 +81 = r^2 +60r +900

0 = 60r +900-81

r = (900-81)/60

Answer 9

(13.65 * 13.65) + 81 = (13.65 * 13.65) + 60(13.65) +900

It does not satisfy the equation

Answer 10

forgot a - sign lol

Answer 11

267.3225 = 267.3225

Answer 12

r = -13.65

Answer 13

would 12 be the answer
?

Answer 14

no 12 would not be the answer

Answer 15

you have too many equal signs can you rewrite the problem please

Answer 16

-13.65 is what i get

Answer 17

i get there is no solution

Answer 18

r^2 means r squared ...