(x+3)(x-6)+13=x(x+2)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(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
f(x)=x²+3x|x-2|
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
1、x*(x+3)*(x+6)*(x+9)=68040 2、x*(x+1)*(x+2)*(x+3)*(x+4)=5544
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
5x-3(2x+1)=6x-4(5-3x)求x
3/x-1=4/x 6/x+1=x+5/x(x+1)
3X+2/5-(X-6)=X/3
3x(2x+3)=4x+6