Question

state which of the following are surds . justify 3√15
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Answer 1

Answer:

$3 \sqrt{15}$

is a surd.

Step-by-step explanation:

$3 \sqrt{15}$

$= 3 \times \sqrt{3} \times \sqrt{5}$

Since,

$\sqrt{3} \: and \: \sqrt{5} \: are \: surds$

$3 \sqrt{15} \: is \: also \: surd$

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