Attachment 9961 those are the questions which i need help on. the first on i need to find the number which goes up the top and the rest i need to know what the answers are- but could u please explain it. thanks

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- Feb 2nd 2009, 07:29 AMandyboy179square roots. stuck!!!
Attachment 9961 those are the questions which i need help on. the first on i need to find the number which goes up the top and the rest i need to know what the answers are- but could u please explain it. thanks

- Feb 2nd 2009, 07:38 AMmathaddictRe :
(1) $\displaystyle \sqrt{8}=2.8282828$

(2) $\displaystyle \sqrt[3]{64}=4$

(3)$\displaystyle \sqrt[3]{-1}=-1$ - Feb 2nd 2009, 07:41 AMandyboy179
- Feb 2nd 2009, 07:45 AMjoserizal
2.8282 * 2.8282 = 7.97.... also equals to 8

4 * 4 * 4 = 64

-1 * -1 * -1 = -1 - Feb 2nd 2009, 07:47 AMandyboy179
i understand now thanks alot mate

- Feb 2nd 2009, 07:51 AMjoserizal
no problem you just multiply the answer with the itself depending on the root. (Evilgrin)

- Feb 2nd 2009, 09:36 AMmasters