(1)4x - 2 = 3 - x (2) -7x + 2 = 2x - 4 (3) -x = 负五分之二x + 1 (4) 2x - 1/3 = - (x/3) + 2 (5) x = (3/2)x + 16 (6)1 - (3/2) x = 3x + 5/2 注:“ / ” 为分数线
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(1)4x-2=3-x(2)-7x+2=2x-4(3)-x=负五分之二x+1(4)2x-1/3=-(x/3)+2(5)x=(3/2)x+16(6)1-(3/2)x=3x+5/2注:“/”为分数线(1)
(1)4x - 2 = 3 - x (2) -7x + 2 = 2x - 4 (3) -x = 负五分之二x + 1 (4) 2x - 1/3 = - (x/3) + 2 (5) x = (3/2)x + 16 (6)1 - (3/2) x = 3x + 5/2 注:“ / ” 为分数线
(1)4x - 2 = 3 - x (2) -7x + 2 = 2x - 4 (3) -x = 负五分之二x + 1 (4) 2x - 1/3 = - (x/3) + 2 (5) x = (3/2)x + 16 (6)1 - (3/2) x = 3x + 5/2 注:“ / ” 为分数线
(1)4x - 2 = 3 - x (2) -7x + 2 = 2x - 4 (3) -x = 负五分之二x + 1 (4) 2x - 1/3 = - (x/3) + 2 (5) x = (3/2)x + 16 (6)1 - (3/2) x = 3x + 5/2 注:“ / ” 为分数线
(1)4X-2=3-X (2) -7X+2=2X-4 (3)-X=-2/5X+1 (4)2X-1/3
解; 4X+X = 3+2 -7X-2X=-4-2 -7/5X=1
5X=5 -9X =-6 X= -5/7
X=1 X=2/3
*-----------------------------------------------*| 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 ||
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
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写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
(x+1)(x+2)(x+3)(x+4)=24
(x-1)(x-2)(x-3)(x-4)=48
(x+1)(x+2)(x+3)(x+4)=24
x-1+x+2+x/3+4x=77
先化简,再求值:(2-x/x^2+x)/(x^2-3x/x^2+2x+1)x(9-x^2/4-2x),其中x=-2
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已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)