计算.25(x+y)^2-0.81(x-y)^2
来源:学生作业帮 编辑:拍题作业网作业帮 分类:数学作业 时间:2024/05/01 09:23:18
计算.25(x+y)^2-0.81(x-y)^2
0.25(x+y)^2-0.81(x-y)^2 .
0.25(x+y)^2-0.81(x-y)^2 .
分解因式
0.25(x+y)^2-0.81(x-y)^2
=[0.5(x+y)+0.9(x-y)][0.5(x+y)-0.9(x-y)]
=(1.4x-0.4y)(0.4x+1.4y)
再问: 题目错了...0.25(x+y)^2-0.81(x-y)^2 抱歉
再答: 分解因式 0.25(x+y)^2-0.81(x-y)^2 =[0.5(x+y)+0.9(x-y)][0.5(x+y)-0.9(x-y)] =(1.4x-0.4y)(0.4x+1.4y)
0.25(x+y)^2-0.81(x-y)^2
=[0.5(x+y)+0.9(x-y)][0.5(x+y)-0.9(x-y)]
=(1.4x-0.4y)(0.4x+1.4y)
再问: 题目错了...0.25(x+y)^2-0.81(x-y)^2 抱歉
再答: 分解因式 0.25(x+y)^2-0.81(x-y)^2 =[0.5(x+y)+0.9(x-y)][0.5(x+y)-0.9(x-y)] =(1.4x-0.4y)(0.4x+1.4y)
计算:(-x-2y) * (3x-y)
计算:(x-y)^2*(y-x)^2*(x-y)^6
计算(x+y)(x+y)^2(-x-y)^3
有这样一道题:"计算(2*x*x*x-3*x*x*y-2*x*y*y)-(x*x*x-2*x*y*y+y*y*y)+【-
x-y/xy-y^2计算
计算(x²/x+2y)-x+2y-2
计算:(x+y/x-y)÷(xy+x^2)
(x^2+xy/x-y)/(xy/x-y)计算
计算【3(x-y)^2(x+y)^-2/4(x+y)^2(x-y)^-2】^-2
计算(x-2y)^2-4(2x+y)(y-2x)+4x(y-2)
计算:(x-y)(x+2y)+(2x-y)(2x+y)
计算(2x-3y)(x+4y)-(3x+y)(x-2y)