SOLUTION: i really just need this couple more questions to finish my exam: plz help... 1. 3√2 + √50 2.(√3-√5)(√3-√5) 3. √m √m s

Algebra ->  Radicals -> SOLUTION: i really just need this couple more questions to finish my exam: plz help... 1. 3√2 + √50 2.(√3-√5)(√3-√5) 3. √m √m s      Log On


   

Question 321540: i really just need this couple more questions to finish my exam: plz help...
1. 3√2 + √50

2.(√3-√5)(√3-√5)

3. √m √m squared (the last m is sqaured)

4. 3 √13/√3 (the / means over √3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
1. 3√2 + √50
---
= 3*sqrt(2) + sqrt(25*2)
---
= 3*sqrt(2) + 5*sqtt(2)
---
= 8*sqrt(2)
===================================
2.(√3-√5)(√3-√5)
= 3 - 2*sqrt(15) + 5
----
= 8 - 2*sqrt(15)
===================================
3. √m √m squared (the last m is sqaured)
---
= sqrt(m)*sqrt(m^2)
---
= |m|*sqrt(m)
===================================
4. 3 √13/√3 (the / means over √3
-------------
= [3*sqrt(13))/sqrt(3)
---
= [3*sqrt(39))/3
---
= sqrt(39)
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Cheers,
Stan H.
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