Question

simplify: 8root 45 -8root 20 + root 245 -3root125
$8\sqrt{45} -8\sqrt{20} + \sqrt{245} - 3\sqrt{125}$

Answer 1

Step-by-step explanation:

$= 8 \sqrt{45} - 8 \sqrt{20} + \sqrt{245} - 3 \sqrt{125} \\ = 8 \sqrt{9 \times 5} - 8 \sqrt{4 \times 5} + \sqrt{7 \times 7 \times 5} - 3 \sqrt{5 \times 5 \times 5} \\ = 8 \times 3 \sqrt{5} - 8 \times 2 \sqrt{5} + 7 \sqrt{5} - 3 \times 5 \sqrt{5} \\ = 24 \sqrt{5} - 16 \sqrt{5} + 7\sqrt{5} - 15 \sqrt{5} \\ = (24 - 16 + 7 - 15) \sqrt{5} \\ = (31 - 31) \sqrt{5} \\ = 0 \times \sqrt{5} \\ = 0$

Answer 2

Answer:

hii mate, hope this answer helps