4x2+5x(X-2)+12=6X的解怎么写?
解方程:1/x2+x +1/x2+3x+2 +1/x2+5x+6 +1/x2+7x+12 +1/x2+9x+20=5/x
(x2+5x+2)(x2+5x+3)-12怎么因式分解 (x2)是x的平方,
1/(x2+3x+2)+1/(x2+5x+6)+1/(x2+7x+12)=1/(x+4)
解方程(1)x2-5x-24=0(2)7x(5x+2)=6(5x+2)(3)x2+12x+25=0(4)5x+2=3x2
解方程 x(x-6)+2x(x-3)=3(x2-x-1) 解不等式:2x2(x-3)+4(x2-x)≥x(2x2-2x+
解分式方程:2/x2+5x+6 + 3/x2+x-6=4/x2-4
解一元二次方程,3x2+1=6x,4x2+5x=81,x(x+5)=0,(2x-2)(x-1)=0,x(x+5)=5x-
解方程x-4/x2+x-2=1/(x-1)+(x-6)/(x2-4)
4x+(12-x)x2=38怎么解方程
Y=(X2+2X+3)/(4X+5)的值域怎么求?
1/(x2+x)+1/(x2+3x+2)+1/(x2+5x+6)+1/(x2+7x+12)=4/21
方程7 / x2+x+ 3/ x2-x=6 / x2-x怎么解?