计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x)

来源：学生作业帮助网编辑：六六作业网时间：2024/12/23 22:38:30

计算：1.(-6y+x)(-6y-x)2.(-6y+x)(6y-x)3.(x+4y)(x-9y)4.(-6y-x)(6y-x)计算：1.(-6y+x)(-6y-x)2.(-6y+x)(6y-x)3.(

计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x)
计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x)

计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x)
1.(-6y+x)(-6y-x)
=[-(6y-x)][-(6y+x)]
=(6y-x)(6y+x)
=(6y)²-x²
=36y²-x²
2.(-6y+x)(6y-x)
=[-(6y-x)](6y-x)
=-(6y-x)(6y-x)
=-[(6y-x)²]
=-（36y²-12xy-x²）
=x²+12xy-36y²
3.(x+4y)(x-9y)
=（x+4y)(x-4y-5y）
=（x+4y）[(x-4y)-5y]
=（x+4y）²-5y(x+4y)
=(x²+8xy+16y²）-（5xy+20y²）
=x²+3xy-4y²
4.(-6y-x)(6y-x)
=[-(6y+x)](6y-x)
=-(6y+x)(6y-x)
=-(36²-x²)
=x²-36y²

啊是各提一个负号（6y-x)(6y+x) =36x2-x2 (-6y+x)(6y-x)=-36y2+6xy+6xy+ -x2
(x+4y)(x-9y)=x2-9xy+4xy-36y2=x2-5xy-36y2
(-6y-x)(6y-x)=(x+6y)(x-6y)=x2-36y2

1.(-6y+x)(-6y-x)
=(-6y)²-x²
=36y²-x²
2.(-6y+x)(6y-x)
=-(6y-x)(6y-x)
=-(6y-x)²
=-(36y²-12y+x²)
=-36y²+12y-x²
3.(x+4y)(x-9y...

全部展开

1.(-6y+x)(-6y-x)
=(-6y)²-x²
=36y²-x²
2.(-6y+x)(6y-x)
=-(6y-x)(6y-x)
=-(6y-x)²
=-(36y²-12y+x²)
=-36y²+12y-x²
3.(x+4y)(x-9y)
=x²-9xy+4xy-36y²
=x²-5xy-36y²
4. (-6y-x)(6y-x)
=(-x-6y)(-x+6y)
=(-x)²-(6y)²
=x²-36y²

收起

计算:(x-y)^2*(y-x)^2*(x-y)^6 1.计算(a^2+a+1)(a^2-a+1) 2.计算(x-y)(x+y)+(3x-2y)(2x+y)-x(6x-y) 计算： [(2x-y)(2x+y)+y(y+6x)]/2x 要详细过程计算：(x-y)^7÷(y-x)^6+(-x-y)^3÷(x+y)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 [(x+2y)(x-2y)+4(x-y)^2-6x]/(6x)计算计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x) 计算：1.(-6y+x)(-6y-x) 2.(-6y+x)(6y-x) 3.(x+4y)(x-9y) 4.(-6y-x)(6y-x)需要过程计算：1.（x-1)^2+2(1-x) 2.(x-y)/(x+3y)÷(x^2-y^2)/(x^2+6xy+9y^2)-2y/(x+y）1.（x-1)^2+2(1-x)2.(x-y)/(x+3y)÷(x^2-y^2)/(x^2+6xy+9y^2)-2y/(x+y）计算：5x-2y-6+ (1/x) + (1/y) 计算（x-2y)^6÷（2y-x)^5 (x-y)7÷(x-y)6计算计算：（3x-4y）-[-（2y+x）+（x-3y）]-6x 计算：[(x+2y)(x-2y)+4(x-y)^2]/6x 计算：[(x+2y)(x-2y)+(x-2y)^2]÷(6x) 已知x平方-6x+9与/y-1/互为相反数,计算(x/y-y/x)÷( x+y) 4y(y-x)平方-6y(x-y)立方怎么计算计算(-x-y)(y-x)+(-x-y)(x+y),