simplify by factoring

Question

sqrt1575to the 4th

sorry not sure how to type it out right

Answer 1

(√1575)^4
= (1575^(1/2))^4
= 1575^2 = 2480625

Answer 2

1575=3*3*5*5*7=3^2*5^2*7

sqroot(1575)=sqroot(3^2*5^2*7)

=3*5*sqroot(7)=15*sqroot(7)

sqroot(1575)=15*sqroot(7)