Regroup the following terms and factorise.... 1. z-6-6xy+xyz 2. ab+4a-3b-12 3. mn-3m+4n-12 4. 12ab-8b-6+9a 5. 28x-21y+8x square- 6xy 6. 12x square - 8x+3xy-2y
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i think u can understand this
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