七年级数学上册计算题专项练习 174.docx

1、七年级数学上册计算题专项练习 1747b2-(5a2+5b2)+2b25x+(5x-6)-( +4)-3(ab-5a2)+(4ab-2a2)2a2+ (3ab+5a2)-8ab-(b+2)-4(-b-3)(x2-y)- (x-y2)- (x2-y2)-(-x+3y)-( x-3y)(6s-1)+4(s2-s+5)-3(a2b-ab2+a3)-(-2a2b+4ab2)- (3mn+3m2-2n2)+(- mn+2m2+)(a3+a2b-4)- (a2b-2)-2(x3-y3+)+3(x3+y3+)8b2-(a2-3b2)+b27x+(2x-7)-( +1)-(ab-4a2)-(ab-2a2)5a

2、2+ (ab+5a2)-4ab-3(b+4)-5(-b-3)(x2-y)+ (x-y2)+ (x2-y2)-(-x+y)+( x-2y)(2s+4)+3(s2-s+3)-4(a2b-ab2-a3)-(-3a2b-3ab2)- (4mn+3m2+2n2)+(- mn+4m2+)(a3+a2b+2)- (a2b-5)-4(x3-y3-)+4(x3-y3-)5b2-(4a2+b2)+2b28x+(x-9)-( +5)-3(ab+3a2)+(4ab-4a2)2a2+ (2ab-5a2)-2ab-4(b+1)-4(-b+2)(x2-y)+ (x-y2)- (x2+y2)-(-x+4y)+( x-y)(5

3、s-3)-2(s2+s+3)-4(a2b-ab2+a3)-(-2a2b-3ab2)- (5mn+2m2-2n2)+(- mn-2m2+)(3a3+a2b+1)- (a2b+4)-4(x3+y3-)+2(x3+y3+)6b2-(2a2-2b2)+b28x+(5x-5)-( +5)-2(ab+5a2)+(3ab-3a2)5a2- (3ab+4a2)-3ab-4(b+3)-4(-b+4)(x2-y)+ (x-y2)- (x2+y2)-(-x+3y)+( x-4y)(5s-4)+3(s2-s+4)-3(a2b+ab2-a3)-(-4a2b-2ab2)- (3mn-4m2-3n2)-(- mn-3m2-

4、)(2a3-a2b+5)+ (a2b-5)-4(x3-y3-)+2(x3-y3-)4b2-(5a2-b2)-5b27x+(3x-1)-( +2)-(ab+2a2)+(4ab-4a2)3a2+ (4ab+5a2)-ab-2(b-1)-5(-b+4)(x2-y)- (x-y2)+ (x2+y2)-(-x+4y)-( x-3y)(2s-4)+4(s2+s-4)-3(a2b+ab2-a3)-(-3a2b+4ab2)- (3mn+2m2+5n2)+(- mn+4m2-)(3a3+a2b+2)+ (a2b-5)-3(x3-y3+)+3(x3+y3-)9b2-(4a2+6b2)+3b25x+(3x-3)-(

5、 +4)-(ab-4a2)-(2ab-3a2)5a2- (4ab-4a2)-6ab-2(b+4)-2(-b+3)(x2-y)- (x-y2)- (x2+y2)-(-x+y)+( x-3y)(3s-1)+2(s2-s-5)-3(a2b+ab2-a3)-(-3a2b-3ab2)- (3mn-2m2-4n2)-(-mn-5m2+)(3a3-a2b-4)+ (a2b-1)-4(x3-y3-)+3(x3-y3+)5b2-(3a2+5b2)-2b25x+(x-1)-( +4)-(ab+3a2)-(4ab-a2)2a2- (3ab-6a2)-ab-4(b+3)-2(-b-4)(x2-y)+ (x-y2)- (x2-y2)-(-x+3y)+( x-4y)(2s+4)+2(s2-s+4)-(a2b+ab2-a3)-(-3a2b-3ab2)- (2mn+2m2-4n2)+(-mn-5m2-)(3a3+a2b-5)- (a2b-1)-2(x3+y3-)-3(x3+y3+)