=(x)^2-3x+2

求下列极限：(1)lim _(xarrow 1)dfrac ({x)^2+x-2}({x)^2-3x+2}；(2)lim _(xarrow 1)dfrac ({

|(x)^2-3x+2|geqslant 1-|||-__

2分解因式: (x)^4+3(x)^3-6(x)^2-3x+2 .

求lim _(xarrow infty )dfrac ({x)^2-3x+2}({x)^2-1}-|||-__求

求极限lim _(xarrow 2)(dfrac (1)({x)^2-3x+2})-(dfrac (1)(x-2))-|||-__求极限

求函数 =sqrt ({x)^2-3x+2}+dfrac (1)(x)的定义域。求函数的定义域。

[题目]方程 ^2-3x+2=0 的根是 __

计算下列函数的极限。-|||-lim _(xarrow 1)dfrac ({x)^2-3x+2}({x)^2-1}

1.求下列函数的极限.-|||-(1) lim _(xarrow 2)dfrac ({x)^2-4}({x)^2-3x+2} ;

1.计算下列极限:-|||-(1) lim _(xarrow -1)dfrac ({x)^2+2x+1}(x-1) ;-|||-(3) lim _(xarrow