4Y(Y-X)^6分之2x(x-y)^7

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4Y(Y-X)^6分之2x(x-y)^7
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4Y(Y-X)^6分之2x(x-y)^7
4Y(Y-X)^6分之2x(x-y)^7

4Y(Y-X)^6分之2x(x-y)^7
4Y(Y-X)^6分之2x(x-y)^7
=4y(x-y)^6分之2x(x-y)^7
=x(x-y)/2y
即2y分之x(x-y)

4Y(Y-X)^6分之2x(x-y)^7 2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了, (x-4y)分之(3x)+(4y-x)分之(x+y)-(x-4y)分之(7y) 化简x+y分之x²-y²-2X-y分之4x(x-y)+y² 计算:y-x分之x+y+x-y分之y-y-x分之2x-y -(5x+y)-7(x-y) -2分之1(x+y)+4分之1(x+2y) 4x-2(x-2) -2x-(3x-1) x-(5x-2y)+2(2x-y) x-4y分之3x + 4y-x分之x+y - x*x-4y分之7y 计算:(-y平方分之x)平方乘以【-(x分之y)平方】立方除以(x分之-y)立方第二题:x平方-x-2分之x平方-5x+6除以x平方-2x-8分之x平方-7x+12第三题:(x平方-4xy+4y平方分之x平方+4xy+4y平方)立方乘以(x+2y 计算 x-2分之x方+1-2-x分之3-4x (x+y)x方-y方分之x方+y-x分之y方 (2) 5分之x+2分之y=6分之5,x+y=3 6x-7y=--2.5x-2y=-0.9三元一次方程组(1)x+y+z=1,x-y+z=3,x+y-z=-1 (1)x-y=3,x+2y+z=8,2x-y-3z=1 (3) 3(2x-y)+4(x-2y)=87,2(3x-y)-3(x-y)=82麻烦再接解道题3(2x-y)+4(x-2y)=87,2(3x-y)-3(x-y)=82解三元一 x-4y分之3x+4y-x分之x+y+x-4y分之7y {5(x-3y)-6=2x+1 3(x+6y)+4=9y+19 {3分之2(x-y)=4分之x+y-1 6)x+y)=4(2x-y)+16 方程2分之x+y+2分之x-y=7,4(x+y)-5(x-y)=2 3分之x+y+2分之x-y=2,4(x+y)-7(x-y=-2用换元法解方程 解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2 解方程组:{二分之x+y+二分之x-y=6,4(x+y)-5(x-y)=2() 5根号x的三次方y -(2y根号x分之y +6x根号x分之y) 1.计算①(x-1-x+1分之8)×x+3分之x+1;②x+3y分之x-y÷x²+6xy+9y²分之x²-y²-x+y分之2y;③(x-x+1分之2x)÷x²-1分之x²-2x+1④(x²-2x分之x+2-x²-4x+4分之x-1)÷x³-2x²分之x-4