整式的乘除当堂练习.doc

数学当堂练习(1)姓名计算(1)(-2a)2(3ab2-5ab3)(2)x(x2-1)+2x2(x+1)-3x(2x-5)(3)3(m+n)(m+n)4+3(-m-n)3(m+n)2数学当堂练习(2)姓名计算(1)(x-y)3÷(y-x)2=(2)3a2·(2a2-9a+3)-4a(2a-1)(3)5xy[4xy-6(xy-xy2)](4)(2x-3)(x+4)(5)(3x+y)(x一2y)数学当堂练习(3)姓名计算(1)(3x-5)(2x+3)(2)5x(x-2)-(x-2)(x+4)解不等式1-(2y+1)(y-2)＞y2-(3y-1)(y+3)-11数学当堂练习(4)姓名计算（1）（1-xy）(-1-xy)(2)(a+2)(a-2)(a2+4)(3)(x+y)(x-y)-(x-2y)(x+2y)(4)6×5数学当堂练习(5)姓名计算(1)(2x-1)2-(2x+1)2(2)(2x-1)2(2x+1)2(3)(2x)2-3(2x+1)2(4)(2x+y–3)2(5)(m–2n+3)(m+2n+3)数学当堂练习(6)姓名计算(1)(1+x+y)(1-x–y)(2)(3x-2y+1)2（3）已知(x+y)2=6(x-y)2=8求(1)(x+y)2(2)xy值（4）（x-2）(x2+2x+4)(5)x(x-1)2-(x2–x+1)(x+1)数学当堂练习(7)姓名计算(1)(-2m-1)2(2)(3x-2y+1)2(3)(3s-2t)(9s2+6st+4t2)(4)-21a2b3c÷7a2b2(5)(28a4b2c-a2b3+14a2b2)÷(-7a2b)(6)(x2y-xy2-2xy)÷xy数学当堂练习(8)姓名一．计算(1)(16x3-8x2+4x)÷(-2x)(2)(x2x3)3÷(-x3)4二。因式分解(1)2x+4x(2)5(a-2)–x(2-x)(3)-12m2n+3mn2