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Evaluate the indefinite integral given below.

int x(x-6)^(6)dx

Evaluate the indefinite integral given below.\newlinex(x6)6dx \int x(x-6)^{6} d x

Full solution

Q. Evaluate the indefinite integral given below.\newlinex(x6)6dx \int x(x-6)^{6} d x
  1. Simplify Integral Expression: Step 11: Simplify the integral expression.\newlineWe start by recognizing the integral as x(x6)6dx\int x(x-6)^{6}\,dx.
  2. Use Substitution: Step 22: Use substitution to simplify the integral. Let u=x6u = x - 6, then du=dxdu = dx. When x=6x = 6, u=0u = 0. Substitute x=u+6x = u + 6 into the integral. The integral becomes (u+6)u6du\int (u+6)u^{6}\,du.
  3. Expand and Integrate: Step 33: Expand the integrand and integrate term by term.\newline(u+6)u6du=(u7+6u6)du\int (u+6)u^{6}\,du = \int (u^{7} + 6u^{6})\,du\newline= u7du+6u6du\int u^{7}\,du + \int 6u^{6}\,du\newline= 18u8+67u7+C\frac{1}{8}u^{8} + \frac{6}{7}u^{7} + C
  4. Substitute Back for x: Step 44: Substitute back for x.\newlineReplace uu with x6x - 6:\newline(18)(x6)8+(67)(x6)7+C(\frac{1}{8})(x-6)^{8} + (\frac{6}{7})(x-6)^{7} + C