(two *x - nine)/(x - one * twelve) - (x^ two - nine *x + eighteen)/(x - one * twelve)^ two = zero
(2 multiply by x minus 9) divide by (x minus 1 multiply by 12) minus (x squared minus 9 multiply by x plus 18) divide by (x minus 1 multiply by 12) squared equally 0
(two multiply by x minus nine) divide by (x minus one multiply by twelve) minus (x to the power of two minus nine multiply by x plus eighteen) divide by (x minus one multiply by twelve) to the power of two equally zero