3(4x+6y)(4x-6y)-(-3x+4y(-4y-3x)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/25 16:29:49
3(4x+6y)(4x-6y)-(-3x+4y(-4y-3x)
![3(4x+6y)(4x-6y)-(-3x+4y(-4y-3x)](/uploads/image/z/17452505-65-5.jpg?t=3%284x%2B6y%29%284x-6y%29-%28-3x%2B4y%28-4y-3x%29)
原式=3[(4x)²-(6y)²]-[(-3x)²-(4y)²]
=48x²-108y²-9x²+16y²
=39x²-92y²
=48x²-108y²-9x²+16y²
=39x²-92y²
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
(3x-4y)(5x-4y)-(7x-8y)(6y-5x)
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
[(x+y)^3]^6-3[(x+y)^3]^6X(x+y)^4X(-x-y)^2
(x-y)^3-(x-y)^4 因式分解
(x+3y-4)(2x-y)