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Mathematics 15 Online
OpenStudy (anonymous):

Medals!!Please help with simplifying radicals

OpenStudy (anonymous):

OpenStudy (ddcamp):

You can start by treating radicals like variables, by combining like terms.

OpenStudy (anonymous):

how?

OpenStudy (anonymous):

10-7-9?

OpenStudy (ddcamp):

Let CubeRoot(7) be x, and FourthRoot(7) be y. Now you have: 10x-7y-9x+y

OpenStudy (anonymous):

ok so 1x-6y?

OpenStudy (ddcamp):

Yes. Then just replace Cuberoot(7) and Fourthroot(7) for x and y.

OpenStudy (anonymous):

so what is the answer?

OpenStudy (anonymous):

3 sqrt 7 - 6 ^ 4 sqrt of 7?

OpenStudy (ddcamp):

Yeah, A

OpenStudy (anonymous):

thank you

OpenStudy (anonymous):

medal given

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