sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=??

I came up with 6sqrt5 I know it's wrong. I think I messed up the breakdown of the sqrt of 125

6 answers

sqrt(125) = sqrt (5*25) = 5 sqrt(5)
sqrt(9*5) + sqrt(4*5) + sqrt5 - sqrt(25*5)
= (3 +2 +1 -5)sqrt5 = sqrt5
So is the answer 6sqrt(5)?? Thank you
sqrt (9*5)+sqrt(4*5)+sqrt(5) -5 sqrt(5)

3 sqrt(5) +2 sqrt (5) + 1 sqrt(5) - 5 sqrt (5)

that is
1 sqrt(5)
ohhh I see what I did wrong Thanks you 2
No, it is NOT 6 sqrt(5)