Math To: Reiny
posted by Maya
This is one whole question:
(12) (10xy^3) (3x^2y^2) (5x) (2y)
I don't know how to do any of these:
simplify sqaure root of 160000
simplify sqaure root of 0.04
simplify 3 * square root 81
simplify square root of 900
simplify square root of 0.0025
simplify [(a^2bc^4)(ab^3c^2)]^2
___________________
(b^2c^5)^3
what is 4^5/2 expressed as a radical with positive exponents

Reiny
(12) (10xy^3) (3x^2y^2) (5x) (2y)
= mmmmh
= 3600 x^3 y^6
For the next 4, I showed you how to do these.
Did you read my reply?
[(a^2bc^4)(ab^3c^2)]^2 / (b^2c^5)^3
= [a^3 b^4 c^6]^2 / (b^6 c^15)
= (a^6 b^8 c^12) / (b^6 c^15)
= a^6 b^2 / c^3 
Maya
for this one:
12) (10xy^3) (3x^2y^2) (5x) (2y)
I got (12) 18x^2 3y^5
and do you know what 4^5/2 expressed as a radical with positive exponents would be, I did read your reply but I keep getting those questions wrong so can you please show me how to do them 
Maya
for the 4^5/2 I got 1/ 2* square root of 4^5

Reiny
<<<for this one:
12) (10xy^3) (3x^2y^2) (5x) (2y)
I got (12) 18x^2 3y^5 >>>
By whatever means can you get that ???
(btw, I did this one for you , look about 20 line up)
let me rearrange the factors for you ...
(12)(10)(3)(5)(2) (x)( x^2)( x)( y^3)( y^2)( y)
= 3600 x^4 y^6 , looks like I missed one of the x's in my first solution 
Maya
I thought you would add the x and y's ? And can you please help me with these: I begging you!!!! I've tried so much and can't do it!!!
simplify sqaure root of 160000
simplify sqaure root of 0.04
simplify 3 * square root 81
simplify square root of 900
simplify square root of 0.0025 
Reiny
in 4^5/2
is it the way you typed it, or is it 4^(5/2)
I have a feeling it is 4^(5/2)
= (1/4)^(5/2)
= [ (1/4)^(1/2) ]^5
= √(1/4)^5
= (1/2)^5
= 1/32
test it with your calculator 
Maya
its to the power of 5/2 and I'm supposed to put it in a radicand so I think im right? and please help me with my other questions!!! I have tried so much

Reiny
simplify sqaure root of 160000 = 400
simplify sqaure root of 0.04 = .2
simplify 3 * square root 81 = I did this one
simplify square root of 900 = 30
simplify square root of 0.0025 =.05
 all these could have simply been obtained by pushing the buttons on a calculator
Your 4^(5/2) ....
I also did this for you, look about 5 or 6 lines up.
Again you could verify my answer on a calculator.
enter:
4
y^{x}
2.5
+/
=
to get .03125 which is 1/32, my answer 
Maya
I cant do it this way, I have to do it this way: for exaple: square root of 50=
5*square root of 2. 
Reiny
Ok, one more shot at explaining it ...
4^(5/2)
= (4^(1/2) )^5
= √4 ^5
= 2^5
= 1/2^5
= 1/32 , as before 
Maya
no im talking about the simplifying questions, I have to do it this way
for exaple: square root of 50=
5*square root of 2.
cant just write a number down. 
Maya
Nevermind, Thank you for all your help, and I am just going to write the numbers. Thanks so much :)
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