Question

need help with addition of square roots...without using calculator. see attachment

Answer 1

\[5\sqrt{2} + 6\sqrt{2}\]
= \[11\sqrt{2}\]

Answer 2

You must simplify it.
For example:
\[\sqrt{50}+\sqrt{72}\]
\[= \sqrt{25\times2}+\sqrt{36x2}\]
\[=5\sqrt{2}+6\sqrt{2}\]
\[= 11\sqrt{2}\]

Answer 3

nice, totally get it..so for the second one let me try and you guys see if it's right ok>

Answer 4

Sure. :)

Answer 5

3√8 + √32
3√2 *4 + √2 * 16

2(3)√2 + 4√2

6√2 + 4√2

= 10√2 is that right?

Answer 6

YUP~ it is right congrats for getting it right xDD

Answer 7

This is correct.

Answer 8

thanks guys

Answer 9

i'm doing a placement test tomorrow so I'm doing a couple questions for each part of the review..more than 1/2 way done now thanks to you guys.

Answer 10

yw (:

Answer 11

Oh yeah btw , you can use a calculator to check if you simplified it right, if your allowed to use a calculator

Answer 12

Usually when simplifying square roots, divide what's under the radical so you are able to get 4, 16, 25 (these numbers are perfect squares) under the radical and if this fails usually using 2 is the best option.
And best of luck with your exam!

Answer 13

thanks mimi...and chaise thanks for last helpful tip