Find the following indefinite integral: integral open parentheses square root of x minus 2 e to the power of x plus 9 x to the power of 6 close parentheses d x 2 over 3 x to the power of 3 over 2 end exponent minus 2 e to the power of x plus 9 over 7 x to the power of 7 plus c 3 over 2 x to the power of 3 over 2 end exponent minus 2 e to the power of x plus 63 x to the power of 7 plus c 3 over 2 x to the power of 3 over 2 end exponent minus 2 e to the power of x plus 9 over 7 x to the power of 7 plus c 2 over 3 x to the power of 3 over 2 end exponent minus 2 e to the power of x plus 63 x to the power of 7 plus c