SOLUTION: How do you simplify by rationalizing the dominator for these problems? 1) 5/sqrt7 2) 7/sqrt7 +sqrt3

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Question 431547: How do you simplify by rationalizing the dominator for these problems?
1) 5/sqrt7
2) 7/sqrt7 +sqrt3
Answer by John10(297) About Me  (Show Source):
You can put this solution on YOUR website!
1) 5/sqrt7
HINT: Multiply this fraction by [sqrt(7)]/[sqrt(7)]
ANSWER: (5[SQRT(7)])/7
2) 7/(sqrt7 + sqrt3)
HINT: Multiply this fraction by [sqrt(7)- sqrt(3)]/[sqrt(7)+ sqrt(3)]
ANSWER: 7*(sqrt(7)-sqrt(3))/4