4(x+y)^2-20(x-y)+25
1个回答
4(x+y)^2-20(x+y)+25
=[2(x+y)-5]^2
=(2x+2y-5)^5
4(x-y)^2-20(x-y)+25
=[2(x-y)-5]^2
=(2x-2y-5)^5
相关问题
4(x+y)-20(x+y)+25
4(x+y)²-20(x+y)+25
4(X+Y)平方-20(x+y)+25
1.{2x+y=-2,2x-y=6 2.{0.25x-0.5y=2,0.4x+0.25y=20
0.25x-0.5y=2,0.4x+0.25y=20,x,y等于
{6x+5y=25 3x+4y=20
解方程x+y=20,2x-y=25
25x^2-20xy+4y^2 因式分解
25x^2+20xy+4y^2,因式分解
4x^2-20xy+25y^2因式分解