3.14x=6.28+xX=?
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3.14x=6.28+xX=?3.14x=6.28+xX=?3.14x=6.28+xX=?3.14x=6.28+x2.14x=6.28x=2.93
3.14x=6.28+xX=?
3.14x=6.28+x
X=?
3.14x=6.28+xX=?
3.14x=6.28+x
2.14x=6.28
x=2.93
3.14x=6.28+xX=?
7/xx+x+1/xx-1=2/xx-x
已知x/(xx+x+1)=a,求xx/(xxxx+xx+1)的值
已知:3x=xx-x+1求(xxxx+xx+1)分之xx
x/xx+x+1=1/4 求xx/xxxx+xx+1
7/(XX+X)+1/(xx-x) =6/(xx-1)
解分式方程7/(XX+X)+1/(xx-x) =6/(xx-1)
7/(XX+X)+1/(xx-x) =6/(xx-1)
x表示1-9的数,x13/xx=xx,1748/xx=xx,x不能重复
(x-y)(x+y)(xx-yy)=?
XXX*XX=XX*XX=3624,X内填写1-9,数字不能重复
已知xx+x-1=0,求:xx+1/xx,xxxx+1/xxxx
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-7
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-708)
解方程2xX(7--2x)+5xX(8--x)=3xX(5--3x)--39
24=x^2-14xx=?
15+5x=20+xx是多少?
x=140-4800/xX等于多少?