SOLUTION: I was hoping you guys could help me with this problem. {{{ -4 *sqrt(25n) + 2* sqrt(81n) + sqrt(700n) }}} thanks!

SOLUTION: I was hoping you guys could help me with this problem. {{{ -4 sqrt(25n) + 2 sqrt(81n) + sqrt(700n) }}} thanks!

Question 37748: I was hoping you guys could help me with this problem.

thanks!
Answer by junior403(76) (Show Source): You can put this solution on YOUR website!
When adding and subtracting radical expressions we first need to simplify...

(from left to right)
The square root of 25 is 5 so the first expression can be simplified as...
=
Then, in the second expression the square root of 81 = 9 which can be simplified as...
=
And in the third expression 700 = 7 * 100, and 100 12 equal to
So it can be simplified as...

So if we put the three expressions back into the equation we get...

Now we can combine like terms.
Remember that we can only add and subtract radical expression that contain the same base and index.
So...
=
And...

Is the most this problem can be simplified.
I hope this helps!
Good Luck!
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