Descomponer en factores: a3−7a. 3a2b2−2a3b+3ab3. (a−b)2+(a−b). (a+b)2−1. a3+8b3. (x2−4y2)+(x−2y). (a3−b3)+(a−b). a2−6ab+9b2. x2−x−2. x2−2x−3. x2+4x−21. a2−11a−26. ax2+bx2+3a+3b. x2−3x−xy+3y. x2−7x+12. a2+5ab+6b2. x4+10x2+25. x2−18x+81. x2−21x+110. x2+19x+88. x2−19x+88. x3−x2+x−1. 9x4−x2. 1−(a−b)2. (a3+b3)+(a+b). m2x−n2x+m2y−n2y. (x−y)2−z2. z2−(x−y)2. 4a4−(3a−1)2. 8x3−y3. x3−3x2y. x3−27y3. x2+3x−40. x2+3xy−10y2. 1−16x2. a6−9a2b4. x3+3x2y+2xy2. x4+4x3y+3x2y2. x2−4xy2+4y4. 16x4+8x2+1. 9a4−4a2c2. a3b−a2b2−2ab3. x4−x3+8x−8. a4−a3x+ay3−xy3.