 I am welcome to the session. Let us discuss the following question. The question says, evaluate integral of 1 by x square minus 4x plus 8 with respect to x. Again with this solution, let i is equal to integral of 1 by x square minus 4x plus 8 with respect to x. Now this is equal to integral of 1 by x square minus 4x plus minus 2 square and we will also subtract coefficient of x. Now this is equal to integral of 1 by minus 4x plus 4 and we know that integral of 1 by x square minus 4x plus 8 with respect to x.