(3x-2y)(-2y-3x)(4y^2+9x^2)等于?

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/12 23:37:50

(3x-2y)(-2y-3x)(4y^2+9x^2)
=(4y²-9x²)(4y²+9x²)
=16y^4-81x^4
再问：还有个问题，答了加分，谢谢（a+b）^4(a-b)^2/(a^2-b^2)^2
再答：（a+b）^4(a-b)^2/(a^2-b^2)^2 =（a+b）^4(a-b)^2/[(a+b)²(a-b)²] =(a+b)² =a²+2ab+b²

(3x-2y)(9x^2+4y^2)(3x+2y)等于什么 (x-2y)2+(x+2y)(x-2y)-(x-3y)(x-y)计算结果是什么?x等于-4,y等于0.5代入后是多少第一若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 x/4+2等于x,x=多少.y/5等于y-3,Y=多少已知 2x-3y/y等于2 求x-y/2x 求x-3y/2x+y (x+3y-4)(2x-y) x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2 4x+5y=105,2x+3y=178,x,y等于 (3X+2Y)*(4X+5Y)*(3X-2Y)*(5Y-4X) 等于多少? (2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y) 化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方【x-3y][x+y]-[x-2y][x +2y]-[x-y