Subtract: (6x3−4x2+2x−1)−(3x3+2x2−5x+4)(6x^3 - 4x^2 + 2x - 1) - (3x^3 + 2x^2 - 5x + 4)(6x3−4x2+2x−1)−(3x3+2x2−5x+4).
3x3−6x2+7x−53x^3 - 6x^2 + 7x - 53x3−6x2+7x−5
3x3−2x2−3x−53x^3 - 2x^2 - 3x - 53x3−2x2−3x−5
9x3−2x2−3x+39x^3 - 2x^2 - 3x + 39x3−2x2−3x+3
3x3−6x2−3x+33x^3 - 6x^2 - 3x + 33x3−6x2−3x+3