Question

What will be 2√28 ?
Explain step wise .

Answer 1

2√28=√112

=10.58

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Answer 2

$Answer : \: \: \: \: \: 2 \sqrt{28} =4 \sqrt{7} \\ \\ \\ Step \: \: Wise \: \: Explanation \: :</p><p> \: \\ \\ 2 \sqrt{2 \times 2 \times 7} \\ \\ 2 \sqrt{ {2}^{2} \times 7 } \\ \\ (2) \times ( \sqrt{ {2}^{2} } \times \sqrt{7} ) \\ \\ 2 \times (2 \times \sqrt{7} ) \\ \\ 4 \sqrt{7}$