七年級上冊期末試題（有答案）33。=.數(shù)學(xué)ab-331）314（--5556C.6M是N是。ACBCCCD.）000A涼B.都C六好3x3x9x2若x7。22）ABCD=與-0.2ab若5axb3y1xy2x3(y205x(x3y)=32A）3-5x2x5B方程1-。D）3211111??????。22334454950三（-1）（-1）43.）B..2x3y)2(x2y).A.B名C.D.abc｜））2x15x1136A０x2x、4x、6x8x10x12x23456）1212（-x3xyy)(3x5xy2y)xy，A、2016x、2016x、4032x、4032x22222。3()5185,0,,002016-2017七年級上冊期末試題參考答案631.B2D4567二389121310-22.8.3、-..723-5x)3(2x，或）.6-2849.501％）三8人，時（-1）（-1）432x3y)2(x2y)2x3y2x4y7y）42x15x113622x(5x16去括號，得4x25x16-x3-1x3解：（-x3xyy)(3x5xy-2y)2222x3xyy3x5xy2y22222x2xyy2211當(dāng)x,y時，22…11112x2xyy2()2()()22222222111224540。2。3()5185,0,,002016-2017七年級上冊期末試題參考答案631.B2D4567二389121310-22.8.3、-..723-5x)3(2x，或）.6-2849.501％）三8人，時（-1）（-1）432x3y)2(x2y)2x3y2x4y7y）42x15x113622x(5x16去括號，得4x25x16-x3-1x3解：（-x3xyy)(3x5xy-2y)2222x3xyy3x5xy2y22222x2xyy2211當(dāng)x,y時，22…11112x2xyy2()2()()22222222111224540。2。3()5185,0,,002016-2017七年級上冊期末試題參考答案631.B2D4567二389121310-22.8.3、-..723-5x)3(2x，或）.6-2849.501％）三8人，時（-1）（-1）432x3y)2(x2y)2x3y2x4y7y）42x15x113622x(5x16去括號，得4x25x16-x3-1x3解：（-x3xyy)(3x5xy-2y)2222x3xyy3x5xy2y22222x2xyy2211當(dāng)x,y時，22…11112x2xyy2()2()()22222222111224540。2。3()5185,0,,002016-2017七年級上冊期末試題參考答案631.B2D4567二389121310-22.8.3、-..723-5x)3(2x，或）.6-2849.501％）三8人，時（-1）（-1）432x3y)2(x2y)2x3y2x4y7y）42x15x113622x(5x16去括號，得4x25x16-x3-1x3解：（-x3xyy)(3x5xy-2y)2222x3xyy3