七年級(jí)計(jì)算題試卷及答案一、選擇題（每題3分，共30分）1.下列計(jì)算正確的是：A.\(3x-2x=1\)B.\(3x+2x=5x\)C.\(3x-2x=5x\)D.\(3x+2x=1x\)答案：B2.計(jì)算\((a+b)^2\)的結(jié)果是：A.\(a^2+2ab+b^2\)B.\(a^2-2ab+b^2\)C.\(a^2+b^2\)D.\(a^2+2ab-b^2\)答案：A3.計(jì)算\((a-b)^2\)的結(jié)果是：A.\(a^2-2ab+b^2\)B.\(a^2+2ab+b^2\)C.\(a^2-b^2\)D.\(a^2+b^2\)答案：A4.計(jì)算\((a+b)(a-b)\)的結(jié)果是：A.\(a^2-b^2\)B.\(a^2+b^2\)C.\(a^2+2ab-b^2\)D.\(a^2-2ab+b^2\)答案：A5.計(jì)算\(2x^2-3x+4\)與\(3x^2+2x-1\)的和是：A.\(5x^2-x+3\)B.\(5x^2+x+3\)C.\(5x^2+x-3\)D.\(5x^2-x-3\)答案：A6.計(jì)算\(2x^2-3x+4\)與\(3x^2+2x-1\)的差是：A.\(-x^2-5x+5\)B.\(-x^2+5x-5\)C.\(-x^2-5x-5\)D.\(-x^2+5x+5\)答案：A7.計(jì)算\(x^2-4x+4\)除以\(x-2\)的結(jié)果是：A.\(x-2\)B.\(x+2\)C.\(x-4\)D.\(x+4\)答案：B8.計(jì)算\(x^2-9\)除以\(x+3\)的結(jié)果是：A.\(x-3\)B.\(x+3\)C.\(x-9\)D.\(x+9\)答案：A9.計(jì)算\(x^2-6x+9\)除以\(x-3\)的結(jié)果是：A.\(x-3\)B.\(x+3\)C.\(x-9\)D.\(x+9\)答案：B10.計(jì)算\(x^2-4\)除以\(x+2\)的結(jié)果是：A.\(x-2\)B.\(x+2\)C.\(x-4\)D.\(x+4\)答案：A二、填空題（每題4分，共40分）11.計(jì)算\(2x^2+3x-5\)與\(-x^2+4x+7\)的和是\(\boxed{3x^2+7x+2}\)。12.計(jì)算\(2x^2+3x-5\)與\(-x^2+4x+7\)的差是\(\boxed{3x^2-x-12}\)。13.計(jì)算\(x^3-2x^2+3x-4\)除以\(x-1\)的結(jié)果是\(\boxed{x^2-x+3}\)。14.計(jì)算\(x^3-2x^2+3x-4\)除以\(x+1\)的結(jié)果是\(\boxed{x^2-3x+4}\)。15.計(jì)算\(x^2-4x+4\)除以\(x-2\)的結(jié)果是\(\boxed{x-2}\)。16.計(jì)算\(x^2-9\)除以\(x+3\)的結(jié)果是\(\boxed{x-3}\)。17.計(jì)算\(x^2-6x+9\)除以\(x-3\)的結(jié)果是\(\boxed{x-3}\)。18.計(jì)算\(x^2-4\)除以\(x+2\)的結(jié)果是\(\boxed{x-2}\)。19.計(jì)算\(2x^2-3x+1\)除以\(x-1\)的結(jié)果是\(\boxed{2x+1}\)。20.計(jì)算\(3x^2-6x+2\)除以\(x-2\)的結(jié)果是\(\boxed{3x-2}\)。三、解答題（每題15分，共30分）21.計(jì)算\(x^2-5x+6\)除以\(x-2\)的結(jié)果，并說明商和余數(shù)。解：\(x^2-5x+6=(x-2)(x-3)+0\)，所以商是\(x-3\)，余數(shù)是\(\boxed{0}\)。22.計(jì)算\(x^3-3x^2+2x\)除以\(x-1\)的結(jié)