SOLUTION: What is the answer to this question: square root 20 - square root 5 + 4 square root 8 I tried this: 2 square root 5 - square root 5 + 8 square root 2 square root 5 + 8 square r

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Question 131846: What is the answer to this question:
square root 20 - square root 5 + 4 square root 8
I tried this:
2 square root 5 - square root 5 + 8 square root 2
square root 5 + 8 square root 2
9 square root 10
18 square root 5
Answer by edjones(7311) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt(20)-sqrt(5)+8sqrt(2)
=sqrt(5*4)-sqrt(5)+8sqrt(2)
=2sqrt(5)-sqrt(5)+8sqrt(2)
=sqrt(5)+8sqrt(2)
.
Ed