Cocientes notables (Baldor)
__1. (1-x2)/(1-x)A. x-1
__2. (4x2-9m2n4)/(2x+3mn2)B. y+x
__3. (9-x4)/(3-x2)C. 1+x
__4. (25-36x4)/(5-6x2)D. x-2
__5. (36m2-49n2x4)/(6m-7nmx2)E. 2x-3mn2
__6. (a2-4b2)/(a+2b)F. x-y
__7. (x2-1)/(x+1)G. 3+x2
__8. (x2-4)/(x+2)H. 6m+7nmx2
__9. (x2-y2)/(x+y)I. a-2b
__10. (y2-x2)/(y-x)J. 5+6x2
__11. 1-3m+2A. (81a6-100b8)/(9a3+10b4)
__12. 1-a-bB. (x2n-y2n)/(xn-yn)
__13. 2+m+nC. (a4b6-4x8y10)/(a2b3+2x4y5)
__14. 9a3-10b4D. (1-9x2m+4)/(1+3m+2)
__15. a+x+3E. (a2x-2-100)/(ax-1-10)
__16. a2b3-2x4y5F. ((x+y)2-z2)/((x+y)-z)
__17. ax-1+10G. ((a+x)2-9)/((a+x)+3)
__18. x+y+zH. (4-(m+n)2)/(2+(m+n))
__19. xn+ynI. (1-(a+b)2)/(1+(a+b))
__20. yJ. (x2-(x-y)2)/(x+(x-y))
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