y=(x-6.5)+(x-5.9)+(x-6)+(x-6.7)+(x-4.5)谢谢了,
y=(x-6.5)+(x-5.9)+(x-6)+(x-6.7)+(x-4.5)谢谢了,
x+y/2+x-y/3=6 4(x+y)-3(x-y)=-20,哥哥姐姐们帮帮忙吧--谢谢了
X[X/(Y+X)+X/(X-Y)]=120/288
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
求函数Y=(X·X-2X-1)/(X·X-5X-6)的值域?
(x-y)³(y-x)(y-x)²+(x-y)^6
若x为int型变量,x=2;则执行x+=x/=x*x;后,x的值为(),谢谢了
化简求值:x/x²+x×(x-2x+1/x+2),其中x=2√3-2谢谢了,
已知X Y Z 满足 x-4x+y+6y+√(z+1)+13=0,求代数式 (xy)的值谢谢了,
谢谢(关于因式分解)2x²+xy-y²-4x+5y-6x²-2x-14(x-y+1)+y(
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
y=2x*(*代表X)