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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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