SOLUTION: write each equation below in simplest radical form. show your steps. 7. square root of 4x to the 8th power 8. square root of 28 8. square root of 27a cubed please help!!!

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: write each equation below in simplest radical form. show your steps. 7. square root of 4x to the 8th power 8. square root of 28 8. square root of 27a cubed please help!!!      Log On


   

Question 252919: write each equation below in simplest radical form. show your steps.
7. square root of 4x to the 8th power
8. square root of 28
8. square root of 27a cubed
please help!!!
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
write each equation below in simplest radical form. show your steps.
7. square root of 4x to the 8th power
sqrt%284x%29%5E8
we cab rewrite using fractional exponents as
%28%284x%29%5E%281%2F2%29%29%5E8
this becomes
%284x%29%5E4
256x%5E4
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8. square root of 28
sqrt%2828%29 = sqrt%284%2A7%29 = sqrt%284%29+%2A+sqrt%287%29 = 2* sqrt(7)
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9. square root of 27a cubed
sqrt%2827a%5E3%29 = sqrt%2827%29%2Asqrt%28a%5E3%29 = 3sqrt%283%29%2Aasqrt%28a%29 = 3asqrt(3a