30-11x^m-30x^2m ,x^2+7/12x-1,72x^4-50x^2y^2+8y^4,2(x+y)^2+(x+y)(x-y)-6(x-y)^2,(x-y)(2x-2y-3)-2
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30-11x^m-30x^2m,x^2+7/12x-1,72x^4-50x^2y^2+8y^4,2(x+y)^2+(x+y)(x-y)-6(x-y)^2,(x-y)(2x-2y-3)-230-11x^
30-11x^m-30x^2m ,x^2+7/12x-1,72x^4-50x^2y^2+8y^4,2(x+y)^2+(x+y)(x-y)-6(x-y)^2,(x-y)(2x-2y-3)-2
30-11x^m-30x^2m ,x^2+7/12x-1,72x^4-50x^2y^2+8y^4,2(x+y)^2+(x+y)(x-y)-6(x-y)^2,(x-y)(2x-2y-3)-2
30-11x^m-30x^2m ,x^2+7/12x-1,72x^4-50x^2y^2+8y^4,2(x+y)^2+(x+y)(x-y)-6(x-y)^2,(x-y)(2x-2y-3)-2
原式=-(30x^2m+11x^m-30)
==-(6m^x-5)(5m^x+6)
原式=x²+7x/12+49/576-49/576-1
=(x+7/24)²-625/576
=(x+7/24+25/24)(x+7/24-25/24)
=(x+4/3)(x-3/4)
原式=2(36x^4-25x²y²+4y^4)
=2[(6x²-2y²)-x²y²]
=2(6x²+xy-2y²)(6x²-xy-2y²)
=2((3x+2y)(2x-y)(3x-2y)(2x+y)
原式=[(x+y)+2][2(x+y)-3]
=((x+y+2)(2x+2y-3)
原式=2(x-y)²-3(x-y)-2
=[2(x-y)+1][(x-y)-2]
=(2x-2y+1)(x-y-2)
你说加分的
加100吧
30-11x^m-30x^2m ,x^2+7/12x-1
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