-X/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容-X+13/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容

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-X/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容-X+13/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容
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-X/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容-X+13/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容
-X/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容
-X+13/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容

-X/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容-X+13/(X+3)(X-5)=A/(X+3)+B/(X-5) 求A B 的值 初二分式内容
右边通分
=[A(X-5)+B(X+3)]/(X+3)(X-5)
=[(A+B)X+(3B-5A)]/(X+3)(X-5)
=(-X+13)/(X+3)(X-5)
所以(A+B)X+(3B-5A)=-X+13
则
A+B=-1
3B-5A=13
解得A=1,B=-2

A = -2 B = 1

将等式通分后可得：（-X+13）/(X+3)(X-5)=[(A+B)X+(3B-5A)]/(X+3)(X-5)
由此可得：A+B=-1
3B-5A=13
解得：A=-2，B=1

用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1) -x+3a,x |x-a|+|x-3| *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || matlab中a(x)=x^4+3x^3+9x-18 b(x)=x^5-4x^3-18x+7 c(x)=x^7+6x^5+9x^3-5x^2-2 d(x)=x^9-8x^7+6x^5-4x^4+d(x)=x^9-8x^7+6x^5-4x^4+6x^2+3 求e(x)=a(x)*b(x)*c(x)*d(x) 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x ( A/X-5 ) + ( B/X+2 ) = 5X-4/X^2-3X-10 ^-^ 5x+15/x^2+x-6=A/x-2+B/x-3 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 已知集合A={X|2x-3/x+5 已知集合A={x|(2x-3)/(x+5) 已知集合A={x|(2x-3)/(x+5) 已知集合A={X|2x-3/x+5 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100