Hasil pengurangan 2(x pangkat 2 - 3x -5) dari 7(x pangkat 2 + x + 2) adalah
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= (7x^{2} + 7x + 14 ) - ( 2x^{2} -6x-10)
= 5x^{2} + 13x + 24
misal pengurangan 5 dari 7, maka 7 - 5 = 2