Question

sqrt5a - 4sqrt20 -6sqrt125a

Answer 1

are u sure there is no a in second term ??

Answer 2

yes there is

Answer 3

after the 20

Answer 4

sq rt 5a - 4 sq rt (5 * 4 * a) - 6 sq rt (5 * 25 * a)

sq rt 5a - 4*2 sq rt 5a - 6*5 sq rt 5a

sq rt 5a - 8 sq rt 5a - 30 sq rt 5a

-37 sq rt 5a..

Answer 5

Thanks! I had a 4 were the 8sqrt should be.

Answer 6

when u take out 4 outside sq rt.. it comes to the sq rt of that number.. i.e. sq rt of 4 = 2 ..

similarly, sq rt of 25 = 5

Answer 7

understood ??

Answer 8

Yes Thanks!