2(3—x)=-4(x+5)咋解
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2(3—x)=-4(x+5)咋解
2(3—x)=-4(x+5)咋解
2(3—x)=-4(x+5)咋解
2(3—x)=-4(x+5)
6-2X=-4X-20
4X-2X=-20-6
2X=-26
X=-26÷2
X=-13
2(3-x)=-4(x+5)
2*3-2x=-4x-20
6-2x=-4x-20
4x-2x=-20-6
2x=-26
x=-13
(-x^4)^2-2(x^2)^3×x×x+(-3x)^3×x^5
(3x²-4x+3)²-(2x²-x+7)² 最后一步怎么得来的?(3x²-4x+3) ²—(2x² -x+7)²=[﹙3x²-4x+3﹚+﹙2x² -x+7)][﹙3x²-4x+3﹚-﹙2x² -x+7)] =﹙5x²-5x+10﹚﹙x
(3x²-4x+3)²-(2x²-x+7)² 最后一步怎么得来的?(3x²-4x+3) ²—(2x² -x+7)²=[﹙3x²-4x+3﹚+﹙2x² -x+7)][﹙3x²-4x+3﹚-﹙2x² -x+7)] =﹙5x²-5x+10﹚﹙x
X-2分之X=X-5分之X-4怎么解?还有X减3分之X等于X减1分之X+1
*-----------------------------------------------*| 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 ||
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x-
x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2
解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
2(3—x)=-4(x+5)咋解
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
(x方-4x+2)(x方-4x+5)+2能分别被x-1,x-2,x-3整除
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28