Question

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

Answer 1

can someone help me ?

Answer 2

thanks

Answer 3

ahh .... that r^2= typo had me confused

Answer 4

r^2+81=r^2+60r+900 ; -r^2 both side

81 = 60r +900 ; -900 both sides

-819 = 60r ;/60

-819/60 = r = -13.65

Answer 5

the r^2 i mean to be r squared sorry

Answer 6

amistre is correct

Answer 7

ok
so we have
r+81=r+60r+900?

Answer 8

yes

Answer 9

81=60r+900
-819=60r
r=-819/60=-13.65

Answer 10

thank u

Answer 11

youre welcome :)