- twelve *(one + (two *x - three)/(x - three) - (two *x - three)^ two /(x*(x - three)))/(x^ two *(x - three)) = zero
minus 12 multiply by (1 plus (2 multiply by x minus 3) divide by (x minus 3) minus (2 multiply by x minus 3) squared divide by (x multiply by (x minus 3))) divide by (x squared multiply by (x minus 3)) equally 0
minus twelve multiply by (one plus (two multiply by x minus three) divide by (x minus three) minus (two multiply by x minus three) to the power of two divide by (x multiply by (x minus three))) divide by (x to the power of two multiply by (x minus three)) equally zero