把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项1.3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)2.3(a-b)+6(a+b)-2(a+b)+6(a-b)
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把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项1.3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)2.3(a-b)+6(a+b)-2(a+b)+6(a-b)
把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项
1.
3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)
2.
3(a-b)+6(a+b)-2(a+b)+6(a-b)
把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项1.3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)2.3(a-b)+6(a+b)-2(a+b)+6(a-b)
1.
3(x+y)²-7(x-y)-9(x+y)²-6(x-y)
=-6(x+y)²-13(x-y)
2.
3(a-b)+6(a+b)-2(a+b)+6(a-b)
=9(a-b)+4(a+b)
1 3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)=-6(x+y)^2-13(x-y)
2 3(a-b)+6(a+b)-2(a+b)+6(a-b)=9(a-b)+4(a+b)
因式分解,(a-b)(x-y)-(b-a)(x-y)(a-b)(x-y)-(b-a)(x+y)
4把(a+b)(x+y)看成整体化简 (a+b)+2(a+b)-(a+b) 3(x+y)²-7(x+y)+8(x+y)²+6(x+y
把(a+b)和(x+y)各看成一项,合并同类项:(1)4(a+b)+2(a+b)-(a+b); (2)3(x-y)^2-7(x+y)+8(x-y)^2+6(x+y
因式分解:x(a-b)(b-c)(c-a)-y(b-a)(c-b)(a-c)
把下列多项式分解因式:3a(x-y)-6b(y-x)
3x(a-b)+2y(b-a)
9x^2(a-b)+y^2(b-a)
如何解因式分解x(x-y)(a-b)-y(y-x)(b-a)
(-x+y)(x-y) (3a+b)(-3a-b) (a-b+c)(a-b-c)
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
b(x-y)+c(y-x)=(x-y)( ) a(a+b)的平方+(b+a)的立方
(2a+b)(2a-3b)+3a(2a+b)和x(x+y)(x-y)-x(x+y)²4a(x+y)-6x-6y和啊a(a-b)-ab+b²
(x+y)(a+2b)
初一数学题把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项 (1)3(x+y)①-7(x-y)-9(x+y)②-6(x-y)
a(m+n)-b(m+n)(a+b)(a-b)-(b+a)m(a-3)-n(3-a)x(x-y)+y(y-x)
因式分解:x^2y^2-4x a(a-b)-2b(b-a)
把(a+b),(a-b),(x+y),(x-y)作为一个因式,合并同类项1.3(x+y)²2-7(x-y)-9(x+y)²2-6(x-y)2.3(a-b)+6(a+b)-2(a+b)+6(a-b)
已知实数a,b,x,y,满足不等式(a+b)(x+y)>2(ay+bx),求证(x-y)/(a-b)+(a-b)/(x-y)>=2