A student writes the value of an expression as in her notebook.

MATHEMATICS · Multi-part · ICSE · Mathematics · Pure Arithmetic · Pure Arithmetic

Problem

A student writes the value of an expression as 615\dfrac{6}{\sqrt{15}} in her notebook. (a) Explain why this answer is not considered to be in its simplest form. (b) Rewrite the expression so that the denominator is rational and simplify the result.

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