Solve
3u^2 - 84 = 0
, where
u
is a real number.
Round your answer to the nearest hundredth.

If there is more than one solution, separate them with commas.
If there is no solution, click on "No solution".

Question

Solve 
3u^2 - 84 = 0
, where 
u
 is a real number.
Round your answer to the nearest hundredth.

If there is more than one solution, separate them with commas.
If there is no solution, click on "No solution".

anonymous · Answer

$$2\sqrt{7}$$

anonymous · Answer

5.29 @jim_thompson5910 is this right

jim_thompson5910 · Answer

there are 2 solutions

jim_thompson5910 · Answer

what is the other solution?

jim_thompson5910 · Answer

hint: x^2 = 100 leads to x = 10 or x = -10

anonymous · Answer

so the other solution is negative

jim_thompson5910 · Answer

yes, which is what?

anonymous · Answer

oh I thought it might be the same one only because the equation calculator  thing gave me the same answer but one was negative what did I miss? =o

jim_thompson5910 · Answer

yes you are correct, one is 5.29 the other is -5.29

anonymous · Answer

YESSS! LOL FINALLY!