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Write the following squares of binomials as trinomials:(i) (x + 2)2(ii) (8a + 3b)2(iii) (2m + 1)2 |
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Answer» (i) (x + 2)2 = x2 + 2 (x) (2) + 22 = x2 + 4x + 4 (ii) (8a + 3b)2 = (8a)2 + 2 (8a) (3b) + (3b)2 = 64a2 + 48ab + 9b2 (iii) (2m + 1)2 = (2m)2 + 2(2m) (1) + 12 = 4m2 + 4m + 1 |
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