Question

Simplify 8root5+under root 20-underroot 245​

Answer 1

$8 \sqrt{5} + \sqrt{2 \times 2 \times 5} - \sqrt{5 \times 7 \times 7} \\ = 8 \sqrt{5} + 2 \sqrt{5} - 7 \sqrt{5} \\ = 10 \sqrt{5} - 7 \sqrt{5} \\ = 3 \sqrt{5}$

Hope it will help you

Answer 2

i have attached your answer.