七年级数学上册计算题专项练习 246.docx

1、七年级数学上册计算题专项练习 2469b2-(4a2-4b2)-5b22x+(4x-4)-( -4)-2(ab+5a2)+(3ab-a2)a2- (ab-5a2)-7ab-(b-4)-2(-b+3)(x2-y)+ (x-y2)- (x2+y2)-(-x+3y)+( x-3y)(3s+1)-3(s2-s+4)-2(a2b+ab2-a3)-(-2a2b+4ab2)- (5mn-4m2+2n2)-(- mn-4m2+)(a3+a2b+3)- (a2b-2)-4(x3+y3+)+3(x3+y3-)3b2-(2a2+5b2)-4b28x+(2x-8)-( +3)-5(ab-a2)+(6ab-a2)4a2

2、- (3ab+a2)-ab-3(b-3)-4(-b-3)(x2-y)- (x-y2)+ (x2+y2)-(-x+3y)-( x-2y)(2s+2)-2(s2+s-2)-3(a2b+ab2+a3)-(-3a2b-2ab2)- (2mn-5m2+4n2)+(-mn+3m2-)(4a3+a2b-1)- (a2b-4)-4(x3+y3+)-2(x3+y3+)4b2-(3a2-5b2)-6b25x+(3x-4)-( -1)-5(ab-a2)+(6ab-a2)6a2- (2ab-6a2)-8ab-3(b+1)-2(-b+3)(x2-y)+ (x-y2)- (x2-y2)-(-x+y)+( x-3y)(4s

3、+1)+3(s2-s+4)-2(a2b+ab2-a3)-(-2a2b-3ab2)- (3mn-5m2-5n2)-(- mn-2m2-)(a3+a2b-2)- (a2b-5)-4(x3-y3+)+2(x3-y3-)8b2-(4a2+b2)-b28x+(2x-7)-( +1)-(ab+a2)-(6ab-a2)3a2+ (3ab+3a2)-2ab-3(b-4)-3(-b+2)(x2-y)+ (x-y2)- (x2-y2)-(-x+2y)-( x-3y)(6s-4)-2(s2-s+5)-(a2b-ab2-a3)+(-2a2b-2ab2)- (5mn+2m2+3n2)+(- mn+2m2+)(4a3+a

4、2b+5)- (a2b-3)-2(x3+y3-)+4(x3+y3-)b2-(a2+b2)+3b22x+(2x-6)-( -1)-(ab-3a2)-(4ab-a2)5a2+ (ab-6a2)-3ab-2(b+3)+5(-b+2)(x2-y)- (x-y2)+ (x2+y2)-(-x+2y)-( x-4y)(2s+1)-4(s2-s+3)-2(a2b-ab2-a3)+(-2a2b+4ab2)- (2mn+3m2+2n2)+(- mn+5m2-)(a3+a2b-5)- (a2b+4)-4(x3-y3-)+2(x3-y3-)7b2-(5a2+5b2)+b26x+(3x-3)-( +4)-2(ab-3a

5、2)-(4ab-a2)a2+ (2ab+6a2)-3ab-3(b+2)+4(-b-3)(x2-y)- (x-y2)+ (x2+y2)-(-x+3y)-( x-3y)(4s-2)-2(s2-s+3)-4(a2b-ab2-a3)-(-2a2b-4ab2)- (5mn-2m2+4n2)-(-mn-3m2+)(4a3+a2b-1)+ (a2b+2)-3(x3+y3-)+3(x3-y3-)8b2-(2a2-6b2)-4b28x+(2x-3)-( -5)-4(ab-4a2)+(2ab-4a2)2a2+ (ab-a2)-7ab-4(b-3)+2(-b+2)(x2-y)- (x-y2)- (x2+y2)-(-x+y)-( x-4y)(6s-1)-4(s2+s+2)-(a2b-ab2+a3)+(-4a2b-3ab2)- (2mn+3m2-2n2)+(-mn+4m2+)(2a3-a2b+4)- (a2b-4)-4(x3-y3-)+4(x3-y3-)