Posted by **ciara ** on Wednesday, April 2, 2014 at 12:10am.

simplify: 6sqrt7-sqrt7

A. 6 sqrt7

B. 5 sqrt 7

C. 5

D. 6

Simplify: 2sqrt12+ sqrt3

A.5sqrt3

B. 3sqrt3

C. 2sqrt15

D. 3sqrt15

Need help on these please

- algebra -
**Tirne**, Wednesday, April 2, 2014 at 12:20am
1) B .. Because since they're both sqrt7 base, you can just subtract them.

2) A .. You have to simplify sqrt12 to sqrt4 times sqrt3, so you will get 2(2)(sqrt3) + sqrt3 .. which will turn into 4sqrt3 + sqrt3. Since they're the same base again, it will be 5sqrt3.

- algebra -
**ciara **, Wednesday, April 2, 2014 at 12:25am
thank you for your help :)

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