Question

Pls explain asap. PICTURE attached. The orange box conversion.

Answer 1

$\: \: \: \: \: \sqrt{42 \times 14 \times 16 \times 12} \\ = \sqrt{7 \times 3 \times 2 \times 7 \times 2 \times 4 \times 4 \times 3 \times 2 \times 2} \\ = \sqrt{ {7}^{2} \times {2}^{2} \times {4}^{2} \times {3}^{2} \times {2}^{2} } \\ = \sqrt{ {14}^{2} \times {4}^{2} \times {6}^{2} } \\ = \sqrt{ {(14 \times 4 \times 6)}^{2} } \\ = 14 \times 4 \times 6$

Answer 2

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