<PRE><B>Question 749970</B>
If x = 4 and y = 1/9 evaluate the expression
a) 96(x^2y^-1/2)^-2 (x^-3 y)^-1/2 
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= 96(x^2/sqrt(y))^-2 * 1/sqrt(y/x^3)
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= 96(4^2/sqrt(1/9))^(-2) * 1/sqrt[(1/9)/64]
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= 96(16/(1/3))^(-2) * 1/[1/3)/8
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= 96(48)^(-2) * 1/(8/3)
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= 96[1/48^2] * (3/8)
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= 0.041667*(3/8)
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= 0.015625
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Cheers,
Stan H.</PRE>