SOLUTION: Please help... sqrt63 - 2sqrt28 + 5sqrt7 These are so confusing for me.
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Question 104980
:
Please help...
sqrt63 - 2sqrt28 + 5sqrt7
These are so confusing for me.
Answer by
checkley75(3666)
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sqrt63=sqrt9*7=3sqrt7
2sqrt28=2sqrt4*7=2*2sqrt7=4sqrt7
3sqrt7-4sqrt7+5sqrt7=4sqrt7 answer.