1.-16y^4-32y^3+8y^22.2.18×28+46×2.18+26×2.18

1.-16y^4-32y^3+8y^22.2.18×28+46×2.18+26×2.18 1.已知二元一次方程3X+4Y=6,当X,Y互为相反数,X=?Y=?当X与Y相等,X=?Y=?2.{Y=3/2X 3{3X-Y=5 4.{5X+Y=32X+8Y=22 5X+3Y-13=0 2X+3Y=-10.55.{X+1=5（Y+2）3（2X-5）-4（3Y+4）=53-5题用代入法解方程组2.{Y=3/2X 2X+8Y=223{3X-Y=55X+3Y-13=0 y(y+4)-y(y-3)-9y详细解答 因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y(x-y)^2）/2（x-y)^2 1.(-1/2x^2*y^3)*2^4*x^5*y^52.(x-y)^3*(y-x)^2*(y-x)^53.8*2^3*32*(-2)^8 6y-(y+2分之y+2-y分之y)÷(y^3-4y-2y^2+8分之y) 怎么算 y (3y^2+8y-3)-6y(3y+2y-1)+9y y^4-8y^2+16 因式分解. 8y^3-4y+1因式分解 1.{5x=7y-1 5x=17-14y 2.{x=16-4y y=34-4x 3.{x+y=7 x:5=y:2 4.{x+2y=1 x-4y=-22 5.{3x=y+1/2 3x=y/4 1.{5x=7y-1 5x=17-14y 2.{x=16-4y y=34-4x 3.{x+y=7 x:5=y:2 4.{x+2y=1 x-4y=-22 5.{3x=y+1/2 3x=y/4 (3y+2)(y-4)-3(y-2)(y-3) (y^2)^4y-(-2y)^3y^6= 4（x-2y)^2-8x+16y+3 已知x^2-8x+y^2-y+16又1/4=0,求[(x+y)(x-y)-(x+y)^2-2y(x-3y)]÷4y的值 (y+3)(4y-1) 8x-8y-3x-3y=-12,6x+6y-8x+4y=16