The problem asks to express the fraction $\frac{3\sqrt{2} - \sqrt{3}}{2\sqrt{3} - \sqrt{2}}$ in the form $\frac{\sqrt{m}}{\sqrt{n}}$, where $m$ and $n$ are whole numbers.

AlgebraRadicalsSimplificationRationalizationFractions
2025/3/19

1. Problem Description

The problem asks to express the fraction 323232\frac{3\sqrt{2} - \sqrt{3}}{2\sqrt{3} - \sqrt{2}} in the form mn\frac{\sqrt{m}}{\sqrt{n}}, where mm and nn are whole numbers.

2. Solution Steps

To express the given fraction in the required form, we need to rationalize the denominator. We multiply both the numerator and the denominator by the conjugate of the denominator, which is 23+22\sqrt{3} + \sqrt{2}.
323232=32323223+223+2\frac{3\sqrt{2} - \sqrt{3}}{2\sqrt{3} - \sqrt{2}} = \frac{3\sqrt{2} - \sqrt{3}}{2\sqrt{3} - \sqrt{2}} \cdot \frac{2\sqrt{3} + \sqrt{2}}{2\sqrt{3} + \sqrt{2}}
Now, multiply the numerators and denominators:
Numerator: (323)(23+2)=3223+32232332=66+666=56(3\sqrt{2} - \sqrt{3})(2\sqrt{3} + \sqrt{2}) = 3\sqrt{2} \cdot 2\sqrt{3} + 3\sqrt{2} \cdot \sqrt{2} - \sqrt{3} \cdot 2\sqrt{3} - \sqrt{3} \cdot \sqrt{2} = 6\sqrt{6} + 6 - 6 - \sqrt{6} = 5\sqrt{6}
Denominator: (232)(23+2)=(23)2(2)2=432=122=10(2\sqrt{3} - \sqrt{2})(2\sqrt{3} + \sqrt{2}) = (2\sqrt{3})^2 - (\sqrt{2})^2 = 4 \cdot 3 - 2 = 12 - 2 = 10
So, we have:
5610=62\frac{5\sqrt{6}}{10} = \frac{\sqrt{6}}{2}
Now, we want to express this in the form mn\frac{\sqrt{m}}{\sqrt{n}}. We can write 22 as 4\sqrt{4}.
62=64\frac{\sqrt{6}}{2} = \frac{\sqrt{6}}{\sqrt{4}}
If we multiply both the numerator and denominator by 2.5\sqrt{2.5} we get:
64=62.542.5=1510\frac{\sqrt{6}}{\sqrt{4}} = \frac{\sqrt{6} \cdot \sqrt{2.5}}{\sqrt{4} \cdot \sqrt{2.5}} = \frac{\sqrt{15}}{\sqrt{10}}.
This is not one of the choices
The options are:
(a) 610\frac{\sqrt{6}}{\sqrt{10}}
(b) 150100\frac{\sqrt{150}}{\sqrt{100}}
(c) 2610\frac{2\sqrt{6}}{\sqrt{10}}
(d) 5610\frac{5\sqrt{6}}{\sqrt{10}}
Let's simplify each option to see which one is equal to 62\frac{\sqrt{6}}{2}.
(a) 610=610\frac{\sqrt{6}}{\sqrt{10}} = \frac{\sqrt{6}}{\sqrt{10}}
(b) 150100=25610=5610=62\frac{\sqrt{150}}{\sqrt{100}} = \frac{\sqrt{25 \cdot 6}}{10} = \frac{5\sqrt{6}}{10} = \frac{\sqrt{6}}{2}
(c) 2610\frac{2\sqrt{6}}{\sqrt{10}}
(d) 5610\frac{5\sqrt{6}}{\sqrt{10}}

3. Final Answer

The correct answer is (b) 150100\frac{\sqrt{150}}{\sqrt{100}}.

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