Question

12 root 18 - 6 root 20 - 3 root 50 plus 8 root 45

Answer 1

Step-by-step explanation:

You mean

$12 \sqrt{18} - 6 \sqrt{20} - 3 \sqrt{50 } + 8 \sqrt{45} \\ = 12 \sqrt{9 \times 2} - 6 \sqrt{4 \times 5} - 3 \sqrt{25 \times 2} + 8 \sqrt{5 \times 9} \\ = 12 \times 3 \sqrt{2} - 6 \times 2 \sqrt{5} - 3 \times 5 \sqrt{2} + 8 \times 3 \sqrt{5} \\ = 36 \sqrt{2} - 12 \sqrt{5} - 15 \sqrt{2} + 24 \sqrt{5} \\ = 36 \sqrt{2} - 15 \sqrt{2} + 24 \sqrt{5} - 12 \sqrt{5} \\ = 21 \sqrt{2} + 12 \sqrt{5}$

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