SOLUTION: hello, i already did this problem but i feel like its wrong so can you please check it for me?? here it is: 2 squareroot(25/16) my answer was: 5/4 i also had

Algebra ->  Square-cubic-other-roots -> SOLUTION: hello, i already did this problem but i feel like its wrong so can you please check it for me?? here it is: 2 squareroot(25/16) my answer was: 5/4 i also had       Log On


   

Question 264922: hello,
i already did this problem but i feel like its wrong
so can you please check it for me??
here it is:
2 squareroot(25/16)
my answer was: 5/4
i also had another question:
i dont no how to solve square roots with letters instead of numbers
for example:
square root(a^2/b^5)
your help is appreciated
THANK YOU!!!!
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2 squareroot(25/16)
my answer was: 5/4
2%2Asqrt%2825%2F16%29
= 2*(5/4)
= 10/8 You didn't multiply by the 2
Also, the sqrt can be -5/4, so
= -10/8
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There are 2 possible square roots, 5/4, and -5/4.
-------
i also had another question:
i dont no how to solve square roots with letters instead of numbers
for example:
square root(a^2/b^5)
sqrt%28a%5E2%2Fb%5E5%29
= sqrt%28a%5E2%2Fb%5E4%29%2Asqrt%281%2Fb%29
= %28a%2Fb%5E2%29%2Asqrt%281%2Fb%29
It's not good to have a fraction in the radical, so more work is usually done.
= %28a%2Fb%5E2%29%2Asqrt%28b%2Fb%5E2%29
= %28a%2Fb%5E3%29%2Asqrt%28b%29
= a%2Asqrt%28b%29%2Fb%5E3