Tarea Multiplicaciòn Abreviada

1. (x+3)(x+7)=


2. (x+4)(x+12)=


3. (x-4)(x+6)=


4. (x-8)(x+7)=


5. (x+3)(x+3)=


6. (x-8)(x-8)=


7. (x+9)(x+9)=


8. (x-9)(x+9)=


9. (x+10)(x-10)=


10. (x+3)(x-3)=


11. (2x+4)(2x-3)=


12. (3x+8)(3x+2)=


13. (4x+5)(4x-3)=

17. (1.1x+2)(1.1.x+3)=

18. (2.5x+4)(2.5x-5)=