Sunday, June 16, 2013

3^(x+4)=6^(2x-5) Solve the equation.

3^(x+4) = 6^(2x-5)
To solve, take the natural logarithm of both sides.
ln (3^(x+4)) = ln (6^(2x-5))
To simplify each side, apply the logarithm rule ln (a^m) =m*ln(a) .
(x+4)ln(3) = (2x-5) ln (6)
xln(3)+4ln(3) = 2xln(6) - 5ln(6)
Then, bring together the terms with x on one side of the equation. Also, bring together the terms without x on the other side of the equation.
xln(3) - 2xln(6) = -4ln(3) -5ln(6)
At the left side, factor out the GCF.
x(ln(3) - 2ln(6)) =-4ln(3) -5ln(6)
And, isolate the x.
x = (-4ln(3) - 5ln(6))/(ln(3)-2ln(6))
x~~5.374
Therefore, the solution is x~~5.374 .

No comments:

Post a Comment

Why is the fact that the Americans are helping the Russians important?

In the late author Tom Clancy’s first novel, The Hunt for Red October, the assistance rendered to the Russians by the United States is impor...