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Evaluate 
int_(6)^(e^(2)+5)(4x-21)/(x-5)dx. Write your answer in simplest form with all logs condensed into a single logarithm (if necessary).

Evaluate 6e2+54x21x5dx \int_{6}^{e^{2}+5} \frac{4 x-21}{x-5} d x . Write your answer in simplest form with all logs condensed into a single logarithm (if necessary).

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Q. Evaluate 6e2+54x21x5dx \int_{6}^{e^{2}+5} \frac{4 x-21}{x-5} d x . Write your answer in simplest form with all logs condensed into a single logarithm (if necessary).
  1. Simplify the integrand: Simplify the integrand by dividing the polynomial.\newlineWe have the integral of a rational function, which can be simplified by polynomial division. The integrand (4x21)/(x5)(4x-21)/(x-5) can be divided to get a simpler expression.\newline(4x21)/(x5)=4(1/(x5))(4x - 21) / (x - 5) = 4 - (1/(x - 5))\newlineNow, we can write the integral as the sum of two simpler integrals:\newline(4x21)/(x5)dx=4dx(1/(x5))dx\int(4x - 21)/(x - 5) dx = \int 4 dx - \int(1/(x - 5)) dx
  2. Integrate the simplified expression: Integrate the simplified expression.\newlineThe integral of a constant is just the constant times the variable, and the integral of 1(x5)\frac{1}{(x - 5)} is the natural logarithm of the absolute value of (x5)(x - 5).\newline4dx=4x\int 4 \, dx = 4x\newline(1(x5))dx=lnx5\int\left(\frac{1}{(x - 5)}\right) dx = \ln|x - 5|\newlineSo the integral becomes:\newline(4x21)(x5)dx=4xlnx5+C\int\frac{(4x - 21)}{(x - 5)} \, dx = 4x - \ln|x - 5| + C
  3. Evaluate definite integral: Evaluate the definite integral from x=6x=6 to x=e2+5x=e^{2}+5. We need to evaluate the antiderivative at the upper and lower limits and subtract the lower evaluation from the upper evaluation.\newlineAt x=e2+5x = e^{2} + 5:\newline4x - \ln|x - 5| = 4(e^{2} + 5) - \ln|e^{2} + 5 - 5| = 4e^{2} + 20 - \ln|e^{2}|\(\newlineAt \$x = 6\):\(\newline\)\(4x - \ln|x - 5| = 4(6) - \ln|6 - 5| = 24 - \ln|1|\(\newline\)Now subtract the lower evaluation from the upper evaluation:\(\newline\)\$(4e^{2} + 20 - \ln|e^{2}|) - (24 - \ln|1|)\)\(\newline\)Since \(\ln|1|\) is \(0\), this simplifies to:\(\newline\)\(4e^{2} + 20 - \ln|e^{2}| - 24\)
  4. Simplify and write answer: Simplify the result and write the answer in simplest form.\(\newline\)We can simplify the expression further by recognizing that \(\ln|e^{2}|\) is simply \(2\), since the natural logarithm is the inverse of the exponential function.\(\newline\)\(4e^{2} + 20 - 2 - 24 = 4e^{2} - 6\)\(\newline\)This is the value of the definite integral from \(x=6\) to \(x=e^{2}+5\).

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