Question

write the answer in simplest form

Answer 1

5√7×2√7

10√7×7

10×7

70.

.

.

.

..

.............. . . .. . . . . . . . .

Answer 2

$5 \sqrt{7} \times 2 \sqrt{7} \\ = 5 \times 2( \sqrt{7} \times \sqrt{7} ) \\ = 10 \times 7 \\ = 70$

Hope this helps

^_^