Question

2 root under 40 minus 3 root under 625 minus 4 root under 320.

Answer 1

Answer:

$2 \sqrt{40} - 3 \sqrt{625} - 4 \sqrt{320} = 2 \sqrt{4 \times 10} - 3 \sqrt{25 \times 25} - 4 \sqrt{64 \times 5} = 4 \sqrt{10} - 75 - 32 \sqrt{5}$