Posted by scott on Saturday, February 26, 2011 at 2:51pm.
(√1575)^4
= (1575^(1/2))^4
= 1575^2 = 2480625
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)
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