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OpenStudy (anonymous):

How to simplify: √c (3 + 2√5) I got 5√5c but it said that was wrong, so I'm not sure where I've messed up.

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OpenStudy (anonymous):

u mean\[\sqrt{c(3+2\sqrt{5})}\] ?

OpenStudy (dean.shyy):

If you distirbute "c," you get: SQRT(3*c + 2*c*SQRT(5))

OpenStudy (anonymous):

You cannot add a non-radical term to a radical term. so the 3 stays separate from the 2rad5.

OpenStudy (anonymous):

All you can do is multiply the expression on the outside to each of the two terms on the inside.

OpenStudy (dean.shyy):

The equation is unclear. Is it the square root of just "c," or is it the square root of the entire equation?

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Directrix (directrix):

The attachment shows what I see as the problem and the solution.

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