Question

Multiply √2(√8+√18)​

Answer 1

Answer:

$\sqrt{2} ( \sqrt{8} + \sqrt{18} ) \\ \\ = \sqrt{2} ( \sqrt{2 \times 4} + \sqrt{9 \times 2} ) \\ \\ = \sqrt{2} (2 \sqrt{2} + 3 \sqrt{2} ) \\ \\ = \sqrt{2} (5 \sqrt{2} ) \\ \\ = \sqrt{2} \times 5 \sqrt{2} \\ \\ = 5 \sqrt{4} \\ \\ = 5 \times 2 \\ \\ = 10$

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Answer 2

Answer:

(

8

+

18

)

=

2

(

2×4

+

9×2

)

=

2

(2

2

+3

2

)

=

2

(5

2

)

=

2

×5

2

=5

4

=5×2

=10