化简x-y分之x^2+y-x分之y^2(x-2分之x+x+2分之x)÷x^2-4分之4x解不等式组2x-1<0,2分之1(x+4)<3分解因式x^2(x-y)+(y-x)(a^2+4)^2-16a^2ax^2-4ax+4a
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化简x-y分之x^2+y-x分之y^2(x-2分之x+x+2分之x)÷x^2-4分之4x解不等式组2x-1<0,2分之1(x+4)<3分解因式x^2(x-y)+(y-x)(a^2+4)^2-16a^2ax^2-4ax+4a
化简x-y分之x^2+y-x分之y^2
(x-2分之x+x+2分之x)÷x^2-4分之4x
解不等式组2x-1<0,2分之1(x+4)<3
分解因式x^2(x-y)+(y-x)
(a^2+4)^2-16a^2
ax^2-4ax+4a
化简x-y分之x^2+y-x分之y^2(x-2分之x+x+2分之x)÷x^2-4分之4x解不等式组2x-1<0,2分之1(x+4)<3分解因式x^2(x-y)+(y-x)(a^2+4)^2-16a^2ax^2-4ax+4a
x-y分之x^2+y-x分之y^2=x+y
(x-2分之x+x+2分之x)÷x^2-4分之4x=?
解不等式组2x-1<0,2分之1(x+4)<3 x
1、化简x-y分之x^2+y-x分之y^2
=X^2/(x-y)-y^2/((x-y)
=(x^2-Y^2)/(x-Y)
=(x-Y)(x+Y)/(x-Y)
=x+y
(x-2分之x+x+2分之x)÷x^2-4分之4x
=(x-2分之x+x+2分之x)*4x分之x^2-4
=x/(x-2)*(x-2)*(x+2)/4x+x/(x+2)*(x-...
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1、化简x-y分之x^2+y-x分之y^2
=X^2/(x-y)-y^2/((x-y)
=(x^2-Y^2)/(x-Y)
=(x-Y)(x+Y)/(x-Y)
=x+y
(x-2分之x+x+2分之x)÷x^2-4分之4x
=(x-2分之x+x+2分之x)*4x分之x^2-4
=x/(x-2)*(x-2)*(x+2)/4x+x/(x+2)*(x-2)*(x+2)/4x
=x*(x-2)/4x+x*(x+2)/4x
=(x-2+x-2)/4
=x/2
2、解不等式组2x-1<0, (1)
(x+4)/2<3 (2)
由(1)得x<1/2
由(2)得x+4<6 x<2
因为
1/2<2, 所以答案 x<1/2
3、分解因式x^2(x-y)+(y-x)
=x^2(x-y)-(x-y)
=(x-y)(x^2-1)
=(x-y)(x-1)(x+1)
(a^2+4)^2-16a^2
=[(a^2+4)-4a][a^2+4+4a]
=(a-2)^2(a+2))^2
ax^2-4ax+4a
=a(a-2)^2
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一、问题阐述不清,不好回答
二、2x-1<0可知:x<0.5;
(x+4)/2可知:x<2
两小取小得:x<0.5
三、1、x^2(x-y)+(y-x)
=x^2(x-y)-(x-y)
=(x^2-1)(x-y)
=)(x-...
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一、问题阐述不清,不好回答
二、2x-1<0可知:x<0.5;
(x+4)/2可知:x<2
两小取小得:x<0.5
三、1、x^2(x-y)+(y-x)
=x^2(x-y)-(x-y)
=(x^2-1)(x-y)
=)(x-1)(x+1)(x-y)
2、(a^2+4)^2-16a^2
=[(a^2+4)-4a][a^2+4+4a]
=(a-2)^2(a+2))^2
3、ax^2-4ax+4a
=a(a-2)^2
收起