10道因式分解.快.1.x^2-y^2+2y-12.x^2-10xy+25y^2-6x+30y+83.x(x-4)(x-2)^2+34.(1-x^2)(1-y^2)-4xy5.b^2+4a-1-4a^26.x^2-4xy+4y^2-2x+4y7.x^2+3ax-10a^2-x+2a8.(x^2-2x)^2-11(x^2-2x)+249.x^2-15xy-100y^210.m^4-2m^2+1
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