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If 2 root 3 + 3 root 2 / 2 root 3 - 3 root = a+b root 6 , then find the value of a and b plz.......answer this fast...........i have exam tmrow....plz

Answer»

We've been GIVEN that;

\Longrightarrow \sf \dfrac{2\sqrt{3} + 3\sqrt{2}}{2\sqrt{3} - 3\sqrt{2}} = a + <klux>B</klux>\sqrt{6}

LHS;

\Longrightarrow \sf \dfrac{2\sqrt{3} + 3\sqrt{2}}{2\sqrt{3} - 3\sqrt{2}}

\Longrightarrow \sf \dfrac{2\sqrt{3} + 3\sqrt{2}}{2\sqrt{3} - 3\sqrt{2}} \times \dfrac{2\sqrt{3} + 3\sqrt{2}}{2\sqrt{3} + 3\sqrt{2}}

\Longrightarrow \sf \dfrac{\Big(2\sqrt{3} + 3\sqrt{2}\Big)^2}{\Big(2\sqrt{3}\Big)^2 - \Big(3\sqrt{2}\Big)^2}

\Longrightarrow \sf \dfrac{4(3) + 9(2) + 12\sqrt{6}}{4(3) - 9(2)}

\Longrightarrow \sf \dfrac{12 + 18 + 12\sqrt{6}}{12 - 18}

\Longrightarrow \sf \dfrac{30 + 12\sqrt{6}}{-6}

\Longrightarrow \sf \dfrac{6(5 + 2\sqrt{6})}{-6}

\Longrightarrow \sf \dfrac{5 + 2\sqrt{6}}{-<klux>1</klux>}

\Longrightarrow \sf \dfrac{5}{-1} + \dfrac{2\sqrt{6}}{-1}

⇒ a = 5/-1

⇒ b = (2√6)/-1



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