Evaluate the square root of one hundred plus two squared minus seven minus the square root of thirty-six.
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OpenStudy (anonymous):
HELP PLEASE?!
OpenStudy (anonymous):
I'm pretty sure it's sqrt(97)-6 ..
OpenStudy (anonymous):
\[\sqrt{100}-2^2-7-\sqrt{36}\]
OpenStudy (goldphenoix):
\[\large \large \sqrt{100+2^2-7} - \sqrt{36}\]
OpenStudy (goldphenoix):
What is the square root of 36?
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OpenStudy (anonymous):
6
OpenStudy (goldphenoix):
Good job. \[\large \large \sqrt{100+2^2-7} - 6\] Now the number inside the square root, you simplify it.
So you have 100+ 2^2 - 7.
Now simplify that. What do you get?
OpenStudy (anonymous):
i'm not too sure..
OpenStudy (goldphenoix):
Hmm. Wait I think I mest up.
OpenStudy (anonymous):
ook
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OpenStudy (goldphenoix):
Hmm. I believe it's suppose to be the way doulike wrote. Except with one minor changes. \[\large \large \sqrt{100} + 2^2 - 7 - \sqrt{36}\] We know that square root of 36 is 6.
Now what's the square root of 100?
OpenStudy (anonymous):
10
OpenStudy (goldphenoix):
Great. Now it should look like: \[\large \large 10 + 2^2 - 7 - 6\]
2^2 give us?
OpenStudy (anonymous):
i don't get it :/
OpenStudy (goldphenoix):
\[\large \large 2^2 = ?\]
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OpenStudy (anonymous):
4
OpenStudy (goldphenoix):
Great. Now 10 + 4 - 7 - 6 = ?
OpenStudy (anonymous):
1
OpenStudy (goldphenoix):
Great. So the answer is 1.
I hope this help! :)
OpenStudy (anonymous):
so it's 1? thank you so much!
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