SOLUTION: how do you work out the problem square root of 10 minus square root of 2/5.

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Question 446077: how do you work out the problem square root of 10 minus square root of 2/5.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
how do you work out the problem square root of 10 minus square root of 2/5.
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how do you work out the problem square root of 10 minus square root of 2/5.
√10-√(2/5)
√10-√2/√5
perform subtraction
(√10*√5-√2)/√5
(√50-√2)/√5
(5√2-√2)/√5
4√2/√5
rationalize denominator, multiply both numerator and denominator by√5
4√10/5 (ans)