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Factorise:1. 9x?- 16y?1252.3. 81 - 16x?5. 2x-327. 3r-48x9. x-64711. 150 - 6x213. 20x? - 4515. a? - 62 - a -617. a -62 +2bc-?19. a? + 2ab + b2-9c221. (a+b)'-a-b23. x² + 2xy + y2 - a² + 2ab – b?25. a-b-a? + b227. 9-a² + 2ab-b229. 1 + 2ab - (a? +63)31. x² - y2 + 6y-933. 9a+3a-86-64624. 5-20x26. 3ab - 243ab28. 27a? - 486210. 8ab2 - 189712. 2-50r?14. (3a +56) 2-4c?16. 4a2-962-2a-3618. 4a2-4b2 + 4a +120. 108a2 - 3(b-c)?22. x² + y2 - z2 - 2xy24. 25x? - 10x +1-36y?26. a? - 62 - 4ac + 4c?28. x? - 5x? - x +530. 9a? +62 +1 -366232. 4r? -9y? - 2x-3y14. x²+3436. x +4X357-2137. x-139. 81x*-y438. 16r-140. x4-625 |
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