★五道数学计算题,★(x^2+y^2)^2-4x^2y^2m^2-16m-x^3-x+2x^2(-1/3x^2y)(-9xy+1)(x-1)^2-(x-3)(x+1)-(x+1)(x-1)注意．．要过程．不要捣乱!

来源：学生作业帮助网编辑：作业帮时间：2024/05/11 03:32:23

★五道数学计算题,★(x^2+y^2)^2-4x^2y^2m^2-16m-x^3-x+2x^2(-1/3x^2y)(-9xy+1)(x-1)^2-(x-3)(x+1)-(x+1)(x-1)注意．．要过程．不要捣乱!
★五道数学计算题,★
(x^2+y^2)^2-4x^2y^2
m^2-16m
-x^3-x+2x^2
(-1/3x^2y)(-9xy+1)
(x-1)^2-(x-3)(x+1)-(x+1)(x-1)
注意．．要过程．
不要捣乱!

★五道数学计算题,★(x^2+y^2)^2-4x^2y^2m^2-16m-x^3-x+2x^2(-1/3x^2y)(-9xy+1)(x-1)^2-(x-3)(x+1)-(x+1)(x-1)注意．．要过程．不要捣乱!
1、
(x^2+y^2)^2-4x^2y^2
=x^4+2x^2y^2+y^4-4x^2y^2
=x^4-2x^2y^2+y^4
=(x^2-y^2)^2
=(x-y)^2*(x+y)^2
2、
m^2-16m
=m(m-16)
3、
-x^3-x+2x^2
=-x(x^2+1)+2x^2
=-x(x^2+1-2x)
=-x(x-1)^2
4、(-1/3x^2y)(-9xy+1)
=3x^3y^2-1/3x^2y
=1/3（x^2y）（9xy-1)
5、
(x-1)^2-(x-3)(x+1)-(x+1)(x-1)
=x^2-2x+1-(x^2-2x-3)-(x^2-1)
=5-x^2
＝（√5-x）（√5+x)

(x^2+y^2)^2-4x^2y^2=x^4+2x^2y^2+y^4-4x^2y^2=x^4-2x^2y^2+y^4=(x^2-y^2)^2
m^2-16m=m(m-16)
-x^3-x+2x^2=-x(x^2+1)+2x^2=-x(x^2+1-2x)=-x(x-1)^2
第四题看不懂

1、(x^2+y^2)^2-4x^2y^2 =(x^2+y^2-2xy)(x^2+y^2+2xy)=(x-y)^2*(x+y)^2
2、m^2-16m
=m(m-16)
3、-x^3-x+2x^2 =-x(x^2-2x+1)=-x(x-1)^2
4、(-1/3x^2y)(-9xy+1) =3x^3y^2-1/3x^2y
5、(x-1)^2-(x-3)(x+1)-(x+1)(x-1) =x^2-2x+1-(x^2-2x-3)-(x^2-1)=5-x^2

(x^2+y^2)^2-4x^2y^2
x^4+2x^2y^2+y^4-4x^2y^2
x^4-2x^2y^2+y^4
(x^2-y^2)^2

【数学计算题】(-x-y)^2答案是多少? 数学计算题五道! ★五道数学计算题,★(x^2+y^2)^2-4x^2y^2m^2-16m-x^3-x+2x^2(-1/3x^2y)(-9xy+1)(x-1)^2-(x-3)(x+1)-(x+1)(x-1)注意．．要过程．不要捣乱! 数学计算题一道4（x+2y）^2-25(x-y)^2 初一数学计算题(2x+3y)(2x-3y) 数学计算题简便运算（2X+Y+1)(2X+Y-1) 计算题：(-2x+3y)^2 计算题：(-2x-3y)^2 计算题:(x+2y)(x-y)-(x+y)^2 计算题 (x+y)(x-y)-(x+2y)^2 一道计算题 (x-y)^2-(x+y)(x-y) 数学计算题y=6（x的平方）-23X+2的单调区间 2道数学简便计算题. 数学代数计算题2道 (x+3y)/(x^2+xy)-x+y计算题数学计算题.我算不出.y/(x-2)=[-2y/(x+1)]/{1-[-y/(x+1)]^2} 计算题 χ-y+2y∧2/x+y 数学计算题.2提