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• Question 1
300 seconds
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Q.

$4\sqrt{6}\cdot\sqrt{3}$

$4\sqrt{9}$

$\sqrt{72}$

$4\sqrt{18}$

$12\sqrt{3}$

• Question 2
300 seconds
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Q.

$5\sqrt{2}\cdot4\sqrt{10}$

$20\sqrt{20}$

$10\sqrt{40}$

$40\sqrt{5}$

$9\sqrt{13}$

• Question 3
300 seconds
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Q.

$\sqrt{6}\left(2\sqrt{6}\right)$

12

$12\sqrt{6}$

$2\sqrt{36}$

$\sqrt{72}$

• Question 4
300 seconds
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Q.

$\sqrt{5}\left(3-\sqrt{6}\right)$

$\sqrt{15}-\sqrt{30}$

$3\sqrt{5}-\sqrt{30}$

$-\sqrt{15}$

$\sqrt{15}-\sqrt{18}$

• Question 5
300 seconds
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Q.

$3\sqrt{6}\left(\sqrt{6}-2\sqrt{10}\right)$

$18-12\sqrt{15}$

$6\sqrt{15}$

$-3\sqrt{24}$

$3\sqrt{36}-6\sqrt{60}$

• Question 6
300 seconds
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Q.

$\sqrt{2}\left(4\sqrt{10}-6\sqrt{6}\right)$

$8\sqrt{10}-6\sqrt{12}$

$4\sqrt{12}-6\sqrt{8}$

$4\sqrt{20}-6\sqrt{12}$

$8\sqrt{5}-12\sqrt{3}$

• Question 7
900 seconds
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Q.

$\left(4\sqrt{2}-2\sqrt{3}\right)\left(5\sqrt{2}-\sqrt{3}\right)$

$20\sqrt{2}-14\sqrt{6}+2\sqrt{3}$

$46-14\sqrt{6}$

$32\sqrt{6}$

$40-14\sqrt{6}+6\sqrt{3}$

• Question 8
900 seconds
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Q.

$\left(3-4\sqrt{10}\right)\left(\sqrt{5}+2\sqrt{3}\right)$

$3\sqrt{5}+6\sqrt{3}-20\sqrt{2}-8\sqrt{30}$

$\sqrt{15}+18-4\sqrt{50}-8\sqrt{30}$

$-3\sqrt{88}$

$3\sqrt{5}+6\sqrt{3}-4\sqrt{50}-8\sqrt{30}$

• Question 9
900 seconds
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Q.

$\left(10-3\sqrt{2}\right)\left(10+3\sqrt{2}\right)$

$82-\sqrt{2}$

$20-6\sqrt{2}$

$100-60\sqrt{2}$

82

• Question 10
900 seconds
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Q.

Find the area of the rectangle

$22\ -3\sqrt{6}$
$22+\sqrt{42}-2\sqrt{6}$
$34+11\sqrt{6}$