two *(- two *x/(x + three) + one + (x^ two - nine)/(x + three)^ two)/(x + three) = zero
2 multiply by ( minus 2 multiply by x divide by (x plus 3) plus 1 plus (x squared minus 9) divide by (x plus 3) squared ) divide by (x plus 3) equally 0
two multiply by ( minus two multiply by x divide by (x plus three) plus one plus (x to the power of two minus nine) divide by (x plus three) to the power of two) divide by (x plus three) equally zero