x^3-9x 3x^3-6x^2+3x (x-1)(x-2)-6 x^2-4xa+8ab-4b^2 (1-x^2)(1-y^2)-4xy x^3-7x-6 4y^4=1 x^3+3x-4(1)x^3-9x (2) 3x^3-6x^2+3x (3) (x-1)(x-2)-6 (4)x^2-4xa+8ab-4b^2 (5 )(1-x^2)(1-y^2)-4xy (6)x^3-7x-6 (7)4y^4+1 (8)x^3+3x-4 (9
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