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Exercise 10.31. Factorise the following expressions using algebraic identities() x2 12x36(ii) 36p2 - 60pg + 25q2 (ii) 9x2 + 66xy 121y(iv) a4 + 6a2b? + 9b4(v) x2 +2 + 2(vi) x2 + x4Factorise the following (2to 10) expressions:2. (i) 4p2 -93. () 20x2- 45y2(i) 4x2 169y2(ii) -25a2b216(i) (2m+3n)2 - (3m +2n)2(i) 9(3x +2)2 4(2x -1)2(i) 63p q2 - 74. () 9(x + y)2-25. (i) 25(a b)2 16(a b)26. (i) x3 - 25x7. () x2-v2-2y 18, (i) 9x2-y2 + 4y-49. () 625-p(ii) p2 4pg +4q2 -2(i) 4a2 - 4b2 + 4a + 1(ii) 5y5 - 405y(ii) 64a2- 9b2 + 42bc -49c2 |
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