GrannySmith
New member
- Joined
- Jan 4, 2014
- Messages
- 14
How to simplify radicals in denominator
I'm in algebra 2. Looking for some math help and found these forums . Sorry if I type some of the problems wrong I have no idea how to type some of this math stuff on computer.
I need help with simplifying radicals in denominator. I know how to do some of these problems, but I need help especially when the denominator has two terms or imaginary numbers in the radicals.
Here are some of the problems I'm stuck on. As far as I'm concerned the object is to get rid of all radicals in the denominator correct? I understand how to do some of these problems and would like to see if my answers are correct. On other problems, I honestly have no clue how to start!
1. √9 / 6√8 Answer i got: 1 / 4√2
2. √3 / 7√5 Answer I got √15 / 35
3. 8√6 + √10 / 2√2 - √7
4. 5 + i / 4 + 3i
5. 7√72 / √40 Answer I got: 21√5 / 5
1 and 2 seem pretty easy to me. I just multiply the radical to both sides to get rid of it. For 4 I have no idea how to do it when there are imaginary numbers lol.
Thanks in advance for the help!
I'm in algebra 2. Looking for some math help and found these forums . Sorry if I type some of the problems wrong I have no idea how to type some of this math stuff on computer.
I need help with simplifying radicals in denominator. I know how to do some of these problems, but I need help especially when the denominator has two terms or imaginary numbers in the radicals.
Here are some of the problems I'm stuck on. As far as I'm concerned the object is to get rid of all radicals in the denominator correct? I understand how to do some of these problems and would like to see if my answers are correct. On other problems, I honestly have no clue how to start!
1. √9 / 6√8 Answer i got: 1 / 4√2
2. √3 / 7√5 Answer I got √15 / 35
3. 8√6 + √10 / 2√2 - √7
4. 5 + i / 4 + 3i
5. 7√72 / √40 Answer I got: 21√5 / 5
1 and 2 seem pretty easy to me. I just multiply the radical to both sides to get rid of it. For 4 I have no idea how to do it when there are imaginary numbers lol.
Thanks in advance for the help!
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