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The like of the following are1.ab,-5b2.ab,3ba3.-5b,9b4.ab,-3a |
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Answer» -step EXPLANATION:(i) Required expression = (8a - 6ab + 5b) + (- 6a - ab - 8B) + ( - 4a + 2ab + 3b) Collecting positive and negative like terms together, we get 8a - 6a - 4a - 6ab - ab + 2ab + 5b - 8b + 3b = 8a - 10a - 7ab + 2ab + 8b - 8b = - 2a - 5ab(ii) Required expression = (5x3 + 7 + 6x - 5x2) + (2x2 - 8 - 9x) + (4x - 2x2 + 3x3) + (3x3- 9x - X2) + ( X - x2 - x3- 4) Collecting positive and negative like terms together, we get 5x3+ 3x3 + 3x3- x3- 5x2 + 2x2 - 2x2 - x2- x2 + 6x - 9x + 4x - 9x + x + 7 - 8 - 4 = 11x3 - x3 - 7X2 + 11x - 18x + 7 - 12 = 10x3 - 7x2 - 7x - 5 |
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