Question 80214
Simplify the rational expressions: 
x^2-6x+5/x^2-25 
Factor to get:[(x-5)(x-1)]/[(x-5)(x+5)]
Cancel to get:(x-1)/(x+5)
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x^2-9x+8/2x-4 divided by x^2-1/2x+2
Factor to get:
[(x-8)(x-1)/2(x-2)] / [(x-1)(x+1)/2(x+1)]
Cancel where you can to get:
[(x-8)/(x-2)]
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Simplify: 

sqrt[64x^10y^2z^46] 
=8x^5yz^23
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Perform the indicated operations: 
4sqrt[18] + 2sqrt[32] - sqrt[8] 
12sqrt2 + 8sqrt2 - 2sqrt2
=18sqrt2
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Cheers,
Stan H.