Question

rationalize 3by root5plusroot2​

Answer 1

Step-by-step explanation:

$\frac{3}{ \sqrt{5} + \sqrt{2} }$

$rationalising \: the \: denominator$

$\frac{3}{ \sqrt{5} + \sqrt{2} } \times \frac{ \sqrt{5} - \sqrt{2} }{ \sqrt{5} - \sqrt{2} }$

$\frac{3( \sqrt{5} - \sqrt{2} }{5 {}^{2} - 2 {}^{2} }$

$\frac{3( \sqrt{5} - \sqrt{2} }{25 - 4}$

$\frac{3 \sqrt{5} - 3 \sqrt{2} }{21}$

$\frac{3( \sqrt{5} - \sqrt{2} }{21}$

$\frac{ \sqrt{5} - \sqrt{2} }{7}$

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Answer 2

Answer:

5 under root cut - 2.2 & 2 under root cut-1.4, 2.2+1.4 =3.6 & 3 divided by 3.6 =0.83 Is your Answer.