作业帮-3(x-y^2)-0.5(2x-4y^2)怎么化简
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-3(x-y^2)-0.5(2x-4y^2)怎么化简
-3(x-y^2)-0.5(2x-4y^2)怎么化简
-3(x-y^2)-0.5(2x-4y^2)怎么化简
-3(x-y^2)-0.5(2x-4y^2)
=-3x+3y^2-x+2y^2
=-4x+5y^2
f是不是积分号？
原式=-∫sin(1/x)(-dx/x²)
=∫[-sin(1/x)]d(1/x)
A是x²-4=0的根
所以A={2,-2}
B是x>1
所以A∩B={2}
A∪B={x|x=-2,x>1}
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
(x+3y-4)(2x-y)
计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y)
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
x(x-y)2-(y-x)3
(2x-y)(2x+y)-2(3x-4y)(4y+3x)
x^4+x^3y+x^2*y^2+y^3x+y^4分解因式
(3x-y)(y+3x)-2(4x-3y)(4x+3y)
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]
(x-4y)(2x+3y)-(x+2y)(2y-x)
(2x-y)(3x-4y)-2(x-y)(2x-5y)简便运算
2（x+y)-3(x-y)=3 ,4(x+y)+3(x-y)=15
5x^3y(x-y)^3-10x^4y^3(y-x)^2因式分解
5x^3y(x-y)^3-10x^4y^3(y-x)^2
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)