SOLUTION: Subtract. Simplify by collecting like radical terms if possible. 4√20-2√5

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Question 209347: Subtract. Simplify by collecting like radical terms if possible.
4√20-2√5

Found 2 solutions by stanbon, checkley77:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Simplify by collecting like radical terms if possible.
4√20-2√5
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= 4*sqrt[4*5] - 2sqrt(5)
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= 4*2sqrt(5) - 2sqrt(5)
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= 8*sqrt(5) - 2*sqrt(5)
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= 6sqrt(5)
===============
Cheers,
Stan H.

Answer by checkley77(12844)   (Show Source): You can put this solution on YOUR website!
4√20-2√5
4*2SQRT5-2SQRT5
8SQRT5-2SQRT5
6SQRT5 ANS.

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