x-3/x方-1 =A/x+1- B/x-1 求A B的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 08:02:20
x)5֯x6m~~lcY-O$RΆS5J55*t
5m,mCM$
U<ٱžO'<Ov/+yo=`NMM`Y1OyyBXIHT 1% qD
x-3/x方-1 =A/x+1- B/x-1 求A B的值
x-3/x方-1 =A/x+1- B/x-1 求A B的值
x-3/x方-1 =A/x+1- B/x-1 求A B的值
(x-3)/(x^2-1)=a/(x+1)-b/(x-1)
两边同时乘以x^2-1,得:
x-3=a(x-1)-b(x+1)=(a-b)x-(a+b)
对比系数,得:
a-b=1
a+b=3
a=2,b=1
A={x|x方+x-2>0},B={x|x方-(1+a)x+a
因式分解 x方+9x=8 x方-7x+12 -a方-4a+21 a方-9ab+14b方 a方x方+7ax-8 2x方-x-3 3a方-2a-1(x+y)方+2(x+y)-15 x3次方—7x方+12x a4次方-21a方-100 x方(x-1)-y方(x-1)
A={x|x方+4x=0},B={x|x方+2(a+1)x+a方-1=0},B属于A,求a
已知a-b=1,a方+b方=25,求ab的值1.x(x+y)-y(x+y)2.(a+b)方+2(a+b)+13.4x方-4x的立方+x方4.x方-16ax+64a方5.(x-1)(x-3)+16.(ab+a)+(b+1)
因式分解 (a方+b方-1)方-4a方b方1.(x方-x)方-14(x方-x)+242.(x方-5x)(x方-5x-2)-243.(x-y)n次方-(x-y)n-3次方4.(1-a方)(1-b方)-4ab
数学题求高手``最次高中水平进`十字相乘法:(ax+b)(cx+d)=2(x方)+3x+1= 6(x方)+x-1= x*x*x-2x-1=A方+B方=(x立方)-3x+2=(x+1)(x+2)(x+3)(x+4)+x=
x-3/x方-1 =A/x+1- B/x-1 求A B的值
(X+3)方-(1-X)方=6,求X
x方-4x+3=(x- )方-1
若x+1/x=3,则x方+1/x方=?x方就是x的方.
(x-2008)方-(2008-x)(2009-x)=1 (2x+5)(3x-1)-(2x+3)(3x-1)先化简,再求值(a-b)方+b(a-b),其中a=2,b=- 1/2
5/x方+x-1/x方-x=0
1艰难的选择题.已知多项式P1方(x)=2x的2方-5x+1和p2方(x)=3x-4,则p1方(x)*P2方(x)的最简结果为:A.6x3方-23x2方+23X-4 B.6x3方+23x2方-4 C.6x3方-23x2方-23X+4D.6x3方+23X2方+23x+4
1.分解因式:a方-b方-4a+4b(2x+y)方-6(2x+y)+9x方-7x-182.分解因式后(x方+5x+3)(x方+5x-23)+k=(x方+5x-10)方,求k的值3.若/a-2/+b方-2b+1=0,则a=( ),b=( )
a方分之x方加b方分之y方=1,求证a方加b方大于等于(x+y)方
4(X方+3X+1)方-(X方+X-4)方-(X方+5X+6)方因式分解
a-b=4,ab=12 求a+b x+1/x=3 求x方+1/x方
设A={x/x方-4x-5=0},B={x/x方=1},求A并B,A交B.