Immediately after locating the constants A and B It is relatively straightforward to compute the integral ##int frac dx x^two + nine ## as it may now be composed as two more simple integrals. I attempted but I cannot see how ##A,B## are constants? The article traces the record of https://gabletoppak.com/bioplastics-greenwashing-or-genuine-solution-the-truth-behind-the-hype/