Answers

2014-06-11T11:43:26+05:30
5^{1-X}=5^{2-3X-8}

1-X = 2-3X-8
1-2+8 = -3X+X
7 = -2X
i.e X= - \frac{7}{2}
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2014-06-11T12:36:20+05:30
5^(1-x)=25/5^(3x+8)
=>5^(1-x)*5^(3x+8)=25
=>5^(1-x+3x+8)=25
=>5^(2x+9)=25---------------------[5 cuts 25=5]
=>1^(2x+9)=5-----------------------[1 power (2x+9) is 2x+9]
=>2x+9=5
=>2x= - 4
=>x= - 4/2
=>x= - 2(ans)
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