Question

$3 \sqrt{128}$
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Answer 1

Step-by-step explanation:

$\: \: \: \: \: \: \: \:3 \sqrt{128}$

$\: \: \: \: \: \: \: \: 3 \sqrt{16 \times 8}$

$\: \: \: \: \: \: \: \: 3 \times 4 \sqrt{8}$

$= 12 \sqrt{8}$

$= 12 \sqrt{4 \times 2}$

$= 12 \times 2 \sqrt{2}$

$24 \sqrt{2}$

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Answer 2

Step-by-step explanation:

128 = 2⁷

3√128 = 3√ 2⁷

= 3× 2³ √ 2

= 24√2

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