Question 108012: Hello out there,I really need some help with some tough problems,I don't have the square root symbol key on my keyboard so I will put square root symbol like this(square root symbol).The first one is,Simplify: 2(S.ROOT)7+3(S.ROOT)7+(S.ROOT)7.The next one is,Simplify: (S.ROOT)8+(S.ROOT)18.The third one is,2(S.ROOT)12+(S.ROOT)3.And the last one is,Simplify:-3(S.ROOT)2+2(S.ROOT)2.Thanks to anyone who can help.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Simplify: 2(S.ROOT)7+3(S.ROOT)7+(S.ROOT)7.
2sqrt(7) + 3sqrt(7) + sqrt(7)
= 6sqrt(7)
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The next one is,Simplify: (S.ROOT)8+(S.ROOT)18.
sqrt(8) + sqrt(18)
= 2sqrt(2) + 3sqrt(2)
=5sqrt(2)
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The third one is,2(S.ROOT)12+(S.ROOT)3.
2sqrt(12) + sqrt(3)
= 2*2sqrt(3) + sqrt(3)
=4sqrt(3) + sqrt(3)
= 5sqrt(3)
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And the last one is,Simplify:-3(S.ROOT)2+2(S.ROOT)2.
3sqrt(2)+2sqrt(2)
= 5sqrt(2)
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Cheers,
Stan H.
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