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# Surds watch

1. I just want to clarify whether my answer is correct for this question....

Fully simplify:
√72 + √8

√9√8 + √8 = 3+2√8?

Thanks
2. 8 root 2
4 root 8 or 8 root 2 again
3. (Original post by Xzerzes)
8 root 2
4 root 8 or 8 root 2 again
Thanks! My answer was wrong then

√72 + √8 =

√36 √2 + √4 √2
6 √2 + 2 √2

Is this correct so far?
4. √72= √36x2 so = 6√2 √8= 2√2 so overall you get 8√2

√9√8 + √8 can be either √72 +√8 getting 8√2 again or you can just use the √9√8 and simplify to 3√8 + √8 =4√8

so what you've done for the first one is correct
5. (Original post by RosaA)
Thanks! My answer was wrong then

√72 + √8 =

√36 √2 + √4 √2
6 √2 + 2 √2

Is this correct so far?
Yes, but do you agree that ? So .
6. (Original post by Zacken)
Yes, but do you agree that ? So .
Yes I agree.... okay cool got it, haha. Thank you

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