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(x+y)²-10(x+y)+254m²-9n²-4m+1(x+y)²-10(x+y)+254m²-9n²-4m+1(x+y)²-
x(m-x)(m-y)-m(x-m)9y-m)x(m-x)(m-y)-m(x-m)9y-m)x(m-x)(m-y)-m(x-m)9y-m)x(m-x)(m-y)-m(x-m)(y-m)=x(m-x)(
已知方程组{4x+y=3m2x-2y=9m,求x+y+m/3x-2y的值.已知方程组{4x+y=3m2x-2y=9m,求x+y+m/3x-2y的值.已知方程组{4x+y=3m2x-2y=9m,求x+y
已知x.y满足2x-y=3m,x+2y=4m+5,且x+y=9,求m的值整体求值已知x.y满足2x-y=3m,x+2y=4m+5,且x+y=9,求m的值整体求值已知x.y满足2x-y=3m,x+2y=
4m(x-y)-2m^2(y-x)^34m(x-y)-2m^2(y-x)^34m(x-y)-2m^2(y-x)^34m(x-y)-2m²(y-x)³=4m(x-y)+2m²
分解因式4m^2(x+y)^2-12mn(x+y)(x-y)+9n^2(x-y)^2?分解因式4m^2(x+y)^2-12mn(x+y)(x-y)+9n^2(x-y)^2?分解因式4m^2(x+y)^
分解因式4m^2(x+y)^2-12mn(x+y)(x-y)+9n^2(x-y)^2分解因式4m^2(x+y)^2-12mn(x+y)(x-y)+9n^2(x-y)^2分解因式4m^2(x+y)^2-
1、-16m^2-48m^4+24m^62、3a(b²+9)²-108ab²3、(x-y)²-10(x-y)+251、-16m^2-48m^4+24m^62、3
分解因式(过程)25x^2-36y^21-x^44(m+n)的^2-p^416-(m+x)^29(a+b)^2-x^2y^24a^2b^2-36x^216(m+n)^2-25(m-n)^2(3x+y)
1:分解因式4(x+2y)²-25(x-y)²=...2:把9(x-y)+12(x²-y²)+4(x+y)²因式分分解因式(x+y)^m+1-(x+y
通分①x/3y与3x/2y²②x-y/2x+2y与(x-y)/(x+y)²③2mn/4m²-9与2m/2m+3通分①x/3y与3x/2y²②x-y/2x+2y与
分解因式(1)x³y²-4x²y+4x;(2)25m²-20m(m-3n)+4(m-3n)²;下转(3)(3)4y²-2y+¼;(
用公式法进行因式分解x(x+4)+425(x+y)²-9(x+y)²(x-y)(x²-xy+y²)+xy(y-x)一定计算202²+202×196+9
1.[(x+2y)²-(x-2y)²-(x+2y)(x-2y)-4y²]÷2x,其中x=-2,y=二分之一2.(x+3)(2x-5)-(2x+1)(x-8)=413.已知
明天要交.计算:12/m^2-9+2/3-m;.计算:12/(m^2-9)+2/(3-m);(x^2-y^2)/(x+y)-[4x(x-y)+y^2]/(2x-y);明天要交.计算:12/m^2-9+
关于x,y的二元一次方程组x+2y=3mx-y=9m的解也是3x+2y=-4的一组解,m=?x+2y=3m+1关于x,y的二元一次方程组x+2y=3mx-y=9m的解也是3x+2y=-4的一组解,m=
已知代数式(-4x+3y)(-3y-4x)与多项式M的差是(2x+3y)(8x-9y),求多项式M已知代数式(-4x+3y)(-3y-4x)与多项式M的差是(2x+3y)(8x-9y),求多项式M已知
1-m^2+10mn-25n^2x^3+3x^2-4x-12x^2+2x-6y-9y^2因式分解1-m^2+10mn-25n^2x^3+3x^2-4x-12x^2+2x-6y-9y^2因式分解1-m^
因式分解:1、-16m²+48m的3次方-24m的4次方;2、25x²-16y²;3、4a²b+b的3次方-4ab²;4、x的4次方-18x²
1x²y-3xy²22x(2x-y)+y(y-2x)3-6x(m-2n)+12(2n-m)43(y-x)²-(x-y)³54a²-366(x-2y)&