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Mathematics 12 Online
OpenStudy (anonymous):

please help

OpenStudy (anonymous):

\[2\sqrt{7x }+ \sqrt{7x}-3\sqrt{7x} ^{-7}\]

OpenStudy (anonymous):

just combine the like terms for the first two, I forget how to do the rest.

OpenStudy (anonymous):

\[that would be 3\sqrt{7x}\]

geerky42 (geerky42):

Yes.

OpenStudy (anonymous):

then what i subtract the 2 and -3

OpenStudy (anonymous):

I forget how to do the rest, I'm an eighth grader taking 10th grade math..lol

geerky42 (geerky42):

Actually, you can't because \( \sqrt{7} \neq \sqrt{7}^{-7} \)

OpenStudy (anonymous):

im in 9th doing algebra 2 but i never took alg 1

OpenStudy (anonymous):

so the answer is just like -7

geerky42 (geerky42):

\( 3\sqrt7 - 3\sqrt7^{-7} \) is in the simplest form, if this is what you want.

OpenStudy (anonymous):

O yes

OpenStudy (anonymous):

thanks you guys and girls

geerky42 (geerky42):

Glad we helped.

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