debrarenea14
debrarenea14 debrarenea14
  • 25-01-2018
  • Mathematics
contestada

Someone please help explain how to do this

Someone please help explain how to do this class=

Respuesta :

jimthompson5910 jimthompson5910
  • 25-01-2018
Answer: [tex]3*\sqrt{5}[/tex]
Note: if you are typing it out on the keyboard, you'd write 3*sqrt(5)
sqrt is shorthand for "square root"

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Factor 45 so that one of the factors is a perfect square and this factor is the largest perfect square possible
Then you break up the root like so
[tex]\sqrt{45}=\sqrt{9*5}[/tex]
[tex]\sqrt{45}=\sqrt{9}*\sqrt{5}[/tex]
[tex]\sqrt{45}=3*\sqrt{5}[/tex]

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