Question

Find th smallest rationalising factor of √28

Answer 1

$\sqrt{28} = \sqrt{7 \times 4} = 2 \sqrt{7} \\ \\ 2 \sqrt{7} \times \sqrt{7} = 7 \times 2 = 14$
smallest rationalizing factor is
$\sqrt{7}$

Answer 2

Step-by-step explanation:

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