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Factorise : (i) a2−ab−3a+3b(ii) x2y−xy2+5x−5y(iii) a2−ab(1−b)−b3(iv) xy2+(x−1)y−1(v) (ax+by)2+(bx−ay)2(vi) ab(x2+y2)−xy(a2+b2)(vii) m−1−(m−1)2+am−a |
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Answer» Factorise : (i) a2−ab−3a+3b(ii) x2y−xy2+5x−5y(iii) a2−ab(1−b)−b3(iv) xy2+(x−1)y−1(v) (ax+by)2+(bx−ay)2(vi) ab(x2+y2)−xy(a2+b2)(vii) m−1−(m−1)2+am−a |
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