If (( frac{a}{b})^{x-1}=( frac{b}{a})^{x-3} ), then the value of (x ) is:

If (( frac{a}{b})^{x-1}=( frac{b}{a})^{x-3} ), then the value of (x

1.	If (( frac{a}{b})^{x-1}=( frac{b}{a})^{x-3} ), then the value of (x ) is:
A.	1/2
B.	1
C.	2
D.	7/2
Answer» D. 7/2

(125 times 125 times 125 times 125 times 125 = 5^? )
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If (3^x - 3^{x-1} = 18 ), then the value of (x^x ) is:
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The value of ([(10)^{150} div (10)^{146}] )
((256)^{0.16} times (256)^{0.09} = ? )