( )+6x=27 5x-()=4.9 2.3x×()=92 3.4÷() =6.8结果x为1
( )+6x=27 5x-()=4.9 2.3x×()=92 3.4÷() =6.8结果x为1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
初一数学x*x+2x+5的值为7,请求3x*x+6x+3的值.因为x*x+2x2x+3=3x(x*x+2x)+2x+2x
3/x-1=4/x 6/x+1=x+5/x(x+1)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
3x+4x+5x=6x x为指数,我不会打x次方.(解方程)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
求和:Sn=1+3x+5x*x+7x*x*x+……+(2n-1)x^n-1 (x不为0和1)
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
5x-3(2x+1)=6x-4(5-3x)求x
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)