(2x+3y)(a-b)-2(a-b)(x+y)如何化简
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(2x+3y)(a-b)-2(a-b)(x+y)如何化简
(2x+3y)(a-b)-2(a-b)(x+y)如何化简
(2x+3y)(a-b)-2(a-b)(x+y)如何化简
原式=(2x+3y)(a-b)-(a-b)(2x+2y)
=(a-b)(2x+3y-2x-2y)
=y(a-b)
=ya-yb
(2x+3y)(a-b)-2(a-b)(x+y)
=(a-b)*[(2x+3y)-2(x+y)]
=(a-b)*[y]
=y*(a-b)
(x+y)(a-2b)
因式分解x(a-b)^2+y(b-a)^3
3x(a-b)+2y(b-a)
3x(a-b)-2y(b-a)分解因式
(x+y)^2+2x+2y,(a-b)^3-2b(b-a)^2.
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已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
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a(x-3)(y-2)+b(3-x)(2-y)
x(y-x))^2(a-b)+(x-y)^3+(b-a)
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通分 a/(y-x)^2,b/(x-y)(x+y)