Question 256889
e^x-10e^-x=3
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{{{e^2x - 10 = 3e^x}}}
{{{e^2x - 3e^x - 10 = 0}}}
Not it's a quadratic in e^x
(e^x - 5)*(e^x + 2) = 0
e^x = 5
x = ln(5)
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e^x = -2 Ignore this one.