Question

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$\sqrt{32} + \sqrt{8} - \sqrt{18}$
a. 2√3
b. 2√2
c. 3√2
d. 3√3

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Answer 1

Step-by-step explanation:

$\sqrt{32} + \sqrt{8} - \sqrt{18} \\ = \sqrt{2 \times 2 \times 2 \times 2 \times 2} + \sqrt{2 \times 2 \times 2} - \sqrt{3 \times 3 \times 2} \\ = 2 \times 2 \sqrt{2} + 2 \sqrt{2} - 3 \sqrt{2} \\ = 4 \sqrt{2} + 2 \sqrt{2} - 3 \sqrt{2} \\ = \sqrt{2} (4 + 2 - 3) \\ = \sqrt{2} (6 - 3) \\ = \sqrt{2} \times 3 \\ = 3 \sqrt{2} \: \: \: ans$

Answer 2

Step-by-step explanation:

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