maddy3lizabeth
maddy3lizabeth maddy3lizabeth
  • 19-01-2019
  • Mathematics
contestada

Please help me with this!!! I will mark brainliest!!

Please help me with this I will mark brainliest class=

Respuesta :

MrBillDoesMath MrBillDoesMath
  • 19-01-2019

Hello from MrBillDoesMath!

Answer:

-9 sqrt(5)


Discussion:

-2 sqrt(20) -  sqrt(125) =

-2 *2 sqrt(5) - sqrt(125)=                                as 20 = 4* 5

-4sqrt(5)- 5 sqrt(5)  =                                      as 125 = 25 *5

(-4 -5) sqrt(5) =

-9 sqrt(5)


Thank you,

MrB

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