rationalise 8/3root2-1
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Step-by-step explanation:
have ,
\mathtt{ \frac{17}{3 \sqrt{2} + 1 } to \: rationalise}
\frac{17}{3 \sqrt{2} + 1 } \times \frac{3 \sqrt{2} - 1 }{3 \sqrt{2} - 1}
\implies \frac{17(3 \sqrt{2} - 1) }{ {(3 \sqrt{2})}^{2} - {(1)}^{2} }
\implies \frac{17(3 \sqrt{2} - 1)}{18 - 1}
\implies 3 \sqrt{2} - 1
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