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(3sqrt(2)+2sqrt(3))/(3sqrt(2)-2sqrt(3)) ...

`(3sqrt(2)+2sqrt(3))/(3sqrt(2)-2sqrt(3))` is equal to

A

a) `5+2sqrt(6)`

B

b) `(3+2sqrt(6))/(2)`

C

c) `5-2sqrt(3)`

D

d) `5+2sqrt(3)`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the expression \((3\sqrt{2} + 2\sqrt{3}) / (3\sqrt{2} - 2\sqrt{3})\), we will rationalize the denominator. Here are the steps: ### Step-by-Step Solution: 1. **Identify the expression**: \[ \frac{3\sqrt{2} + 2\sqrt{3}}{3\sqrt{2} - 2\sqrt{3}} \] 2. **Multiply numerator and denominator by the conjugate of the denominator**: The conjugate of \(3\sqrt{2} - 2\sqrt{3}\) is \(3\sqrt{2} + 2\sqrt{3}\). Thus, we multiply both the numerator and denominator by \(3\sqrt{2} + 2\sqrt{3}\): \[ \frac{(3\sqrt{2} + 2\sqrt{3})(3\sqrt{2} + 2\sqrt{3})}{(3\sqrt{2} - 2\sqrt{3})(3\sqrt{2} + 2\sqrt{3})} \] 3. **Simplify the denominator using the difference of squares**: The denominator becomes: \[ (3\sqrt{2})^2 - (2\sqrt{3})^2 = 9 \cdot 2 - 4 \cdot 3 = 18 - 12 = 6 \] 4. **Expand the numerator**: The numerator becomes: \[ (3\sqrt{2})^2 + 2 \cdot (3\sqrt{2})(2\sqrt{3}) + (2\sqrt{3})^2 = 9 \cdot 2 + 12\sqrt{6} + 4 \cdot 3 = 18 + 12\sqrt{6} + 12 = 30 + 12\sqrt{6} \] 5. **Combine the results**: Now, we can write the expression as: \[ \frac{30 + 12\sqrt{6}}{6} \] 6. **Simplify the fraction**: Divide both terms in the numerator by 6: \[ \frac{30}{6} + \frac{12\sqrt{6}}{6} = 5 + 2\sqrt{6} \] ### Final Answer: Thus, the value of the expression \((3\sqrt{2} + 2\sqrt{3}) / (3\sqrt{2} - 2\sqrt{3})\) is: \[ \boxed{5 + 2\sqrt{6}} \]
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KIRAN PUBLICATION-POWER, INDICES AND SURDS-Type -IV
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