simplify the following radical expression : 4 sqrt (625)

a) 25
b) sqrt (25)
c) 5
d) no solution exists

i think a

3 answers

umm... "A" would not be the correct answer. Don't forget the 4. It is not a square root.

4sqrt(625) means what number, when raise to the power of 4, would equal to 625?

Other word, x^4=625 and what's x?
the correct answer is c
Is this what you mean?

4√625 = 4 (25) = 100

It doesn't fit any of the choices.