SOLUTION: directions: find the difference. 7(rad)2-(rad)8. what's the difference?

Algebra ->  Radicals -> SOLUTION: directions: find the difference. 7(rad)2-(rad)8. what's the difference?      Log On


   

Question 123579: directions: find the difference. 7(rad)2-(rad)8. what's the difference?
Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given sum is:

7+sqrt%282%29+-+sqrt%288%29

this can be written as:

7+sqrt%282%29+-+sqrt%284+%2A2%29

7+sqrt%282%29+-+2+sqrt+%282%29


5+sqrt%282%29


thus the solution

regs