Subtracting simplified radicals

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The equation is ((16 * sqrt(21)) / (2 * sqrt(7))) - (5 * sqrt(12)). Please help. It's an extra credit assignment and I'm having trouble. :\

Guest Feb 15, 2012

admin · Answer 1 · 2012-02-15T09:07:55

[input]((16 * sqrt(21)) / (2 * sqrt(7))) - (5 * sqrt(12)[/input])