Question 1025485
Solve for x:   2 ln x - ln (x+1) = 3
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ln(x^2) - ln(x+1) = 3
ln(x^2) = ln(x+1) + 3
ln(x^2) = ln(x+1) + ln(e^3)
ln(x^2) = ln(e^3*(x+1))
x^2 = e^3*x+1
x^2 - e^3x - 1 = 0
*[invoke solve_quadratic_equation 1,-e^3,-1]
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The negative solution is not allowed due to ln(x).
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