Which of the following is the CORRECT rationa | vedclass

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(C) To rationalise the denominator of $\frac{15}{\sqrt{5}+2}$,we multiply the numerator and the denominator by the conjugate of the denominator,which

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$15 \sqrt{5}-30$

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(C) To rationalise the denominator of $\frac{15}{\sqrt{5}+2}$,we multiply the numerator and the denominator by the conjugate of the denominator,which is $(\sqrt{5}-2)$.$\frac{15}{\sqrt{5}+2} 	imes \frac{\sqrt{5}-2}{\sqrt{5}-2} = \frac{15(\sqrt{5}-2)}{(\sqrt{5})^2 - (2)^2}$$= \frac{15(\sqrt{5}-2)}{5-4}$$= \frac{15(\sqrt{5}-2)}{1}$$= 15 \sqrt{5} - 30$.

Which of the following is the $CORRECT$ rationalised form of $\frac{15}{\sqrt{5}+2} ?$

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