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Evaluate 
int(2x^(3)+4x^(2)-5)/(x+3)dx.
Choose 1 answer:
(A) 
(2x^(3))/(3)-(1)/(2)x^(2)+6x+13 ln |x+3|+C
(B) 
(2x^(3))/(3)-x^(2)+6x+13 ln |x+3|+C
(C) 
(2x^(3))/(3)-x^(2)+6x-23 ln |x+3|+C
(D) 
(2x^(3))/(3)-x^(2)-6x-23 ln |x+3|+C

Evaluate 2x3+4x25x+3dx \int \frac{2 x^{3}+4 x^{2}-5}{x+3} d x .\newlineChoose 11 answer:\newline(A) 2x3312x2+6x+13lnx+3+C \frac{2 x^{3}}{3}-\frac{1}{2} x^{2}+6 x+13 \ln |x+3|+C \newline(B) 2x33x2+6x+13lnx+3+C \frac{2 x^{3}}{3}-x^{2}+6 x+13 \ln |x+3|+C \newline(C) 2x33x2+6x23lnx+3+C \frac{2 x^{3}}{3}-x^{2}+6 x-23 \ln |x+3|+C \newline(D) 2x33x26x23lnx+3+C \frac{2 x^{3}}{3}-x^{2}-6 x-23 \ln |x+3|+C

Full solution

Q. Evaluate 2x3+4x25x+3dx \int \frac{2 x^{3}+4 x^{2}-5}{x+3} d x .\newlineChoose 11 answer:\newline(A) 2x3312x2+6x+13lnx+3+C \frac{2 x^{3}}{3}-\frac{1}{2} x^{2}+6 x+13 \ln |x+3|+C \newline(B) 2x33x2+6x+13lnx+3+C \frac{2 x^{3}}{3}-x^{2}+6 x+13 \ln |x+3|+C \newline(C) 2x33x2+6x23lnx+3+C \frac{2 x^{3}}{3}-x^{2}+6 x-23 \ln |x+3|+C \newline(D) 2x33x26x23lnx+3+C \frac{2 x^{3}}{3}-x^{2}-6 x-23 \ln |x+3|+C
  1. Polynomial Long Division: First, let's try to simplify the integral by doing polynomial long division for (2x3+4x25)(2x^3 + 4x^2 - 5) divided by (x+3)(x + 3).
  2. Simplify Result: After dividing, we get 2x22x+10(32x+3)2x^2 - 2x + 10 - \left(\frac{32}{x + 3}\right).
  3. Integrate Terms Separately: Now, let's integrate each term separately: 2x2dx\int 2x^2 \, dx, 2xdx-\int 2x \, dx, 10dx\int 10 \, dx, and 32x+3dx-\int \frac{32}{x + 3} \, dx.
  4. Integrate 2x22x^2: Integrating 2x2dx\int 2x^2 \, dx gives us 23x3\frac{2}{3}x^3.
  5. Integrate 2x-2x: Integrating 2xdx-\int 2x \, dx gives us x2-x^2.
  6. Integrate 1010: Integrating 10dx\int 10 \, dx gives us 10x10x.
  7. Integrate 32x+3-\frac{32}{x + 3}: Integrating (32x+3)dx-\int\left(\frac{32}{x + 3}\right) dx gives us 32lnx+3-32 \ln|x + 3|.
  8. Combine Integrated Parts: Adding all the integrated parts together, we get (23)x3x2+10x32lnx+3+C(\frac{2}{3})x^3 - x^2 + 10x - 32 \ln|x + 3| + C.

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