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Mathematics 21 Online
OpenStudy (anonymous):

(4+3sqrt3) (9-2sqrt3)

OpenStudy (mathstudent55):

Multiply it out with FOIL, then combine like terms 4(9) - 4(2)sqrt(3) +3(9)sqrt(3) - 3(2)sqrt(3)sqrt(3)

OpenStudy (mathstudent55):

Can you simplify that?

OpenStudy (anonymous):

idk

OpenStudy (anonymous):

so?

OpenStudy (mathstudent55):

Now multiply all terms out: 36 - 8sqrt(3) + 27sqrt(3) - 6sqrt(9)

OpenStudy (mathstudent55):

look at the last term, what is sqrt(9)?

OpenStudy (anonymous):

36 plus 13 square root of 3 so is that the answer?

OpenStudy (mathstudent55):

The next step is: 36 + 19sqrt(3) - 6(3)

OpenStudy (mathstudent55):

36 + 19sqrt(3) - 18 18 + 19sqrt(3)

OpenStudy (anonymous):

where do i go from there?

OpenStudy (mathstudent55):

18 + 19sqrt(3) is the final answer

OpenStudy (anonymous):

Thank you very much i became a fam you should also do the same& stay in contact cause im going to need a lot of help with math

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