(1)4(x-2)^2-(3x-1)^2=0 (2)x^2+5=2√5x (3)2x^2=7x-3^2 (4)4(x-1)^2=3(1-x)

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(1)4(x-2)^2-(3x-1)^2=0 (2)x^2+5=2√5x (3)2x^2=7x-3^2 (4)4(x-1)^2=3(1-x)
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(1)4(x-2)^2-(3x-1)^2=0 (2)x^2+5=2√5x (3)2x^2=7x-3^2 (4)4(x-1)^2=3(1-x)
(1)4(x-2)^2-(3x-1)^2=0 (2)x^2+5=2√5x (3)2x^2=7x-3^2 (4)4(x-1)^2=3(1-x)

(1)4(x-2)^2-(3x-1)^2=0 (2)x^2+5=2√5x (3)2x^2=7x-3^2 (4)4(x-1)^2=3(1-x)
(1)4(x-2)^2-(3x-1)^2=0
(2(x-2)+(3x-1))(2(x-2)-(3x-1))=0
(5x-5)(-x-3)=0
x=1 x=-3
(2)x^2+5=2√5x
x^2-2√5x+5=0
(x-√5)^2=0
x=√5
(3)2x^2=7x-3^2
2x^2-7x+9=0
(2x-9)(x+1)=0
x=9/2 x=-1
(4)4(x-1)^2=3(1-x)
4(x-1)^2-3(1-x)=0
4(x-1)^2+3(x-1)=0
(4x-4+3)(x-1)=0
x=1/4 x=1

(1)4(x-2)^2-(3x-1)^2=0
[2(x-2)-(3x-1)][2(x-2)+(3x-1)]=0
(2x-4-3x+1)(2x-4+3x-1)=0
(-x-3)(5x-5)=0
-5(x+3)(x-1)=0
(x+3)(x-1)=0
x=-3或x=1
(2)x^2+5=2√5x
x^2-2√5x+5= 0
(...

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(1)4(x-2)^2-(3x-1)^2=0
[2(x-2)-(3x-1)][2(x-2)+(3x-1)]=0
(2x-4-3x+1)(2x-4+3x-1)=0
(-x-3)(5x-5)=0
-5(x+3)(x-1)=0
(x+3)(x-1)=0
x=-3或x=1
(2)x^2+5=2√5x
x^2-2√5x+5= 0
(x-√5)^2=0
x=√5
(3)2x^2=7x-3^2
2x^2-7x+3^2=0
2x^2-7x+9=0
△=b^2-4ac=7^2-4*2*9=-23<0
所以方程无解
(4)4(x-1)^2=3(1-x)
4(x-1)^2-3(1-x)=0
4(x-1)^2+3(x-1)=0
(x-1)[4(x-1)+3]=0
(x-1)(4x-4+3)=0
(x-1)(4x-1)=0
x=1或x=1/4

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(1)移项:4(x-2)^2=(3x-1)^2 等号两边开方:2(x-2)=3x-1或者-2(x-2)=3x-1
最后得x=-3或者x=1;
(2)x^2+5-2√5x=0 也就是(x- √5)^2=0 得x=√5
(3)类似(1)得√2x=7x-3,得x=3/(7-√2)
(4)x=1,等式成立,x不为1的时候等式两边约分得:4(1-x)=3,得x=1/4,...

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(1)移项:4(x-2)^2=(3x-1)^2 等号两边开方:2(x-2)=3x-1或者-2(x-2)=3x-1
最后得x=-3或者x=1;
(2)x^2+5-2√5x=0 也就是(x- √5)^2=0 得x=√5
(3)类似(1)得√2x=7x-3,得x=3/(7-√2)
(4)x=1,等式成立,x不为1的时候等式两边约分得:4(1-x)=3,得x=1/4,即x=1或1/4

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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 (x-1)^3(x+1)(x-2)/(x+4) (x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3) (x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25 计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1 请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 (X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0 *-----------------------------------------------*| 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 || (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 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 x^2-1/x^2+4x+4÷(x+1)×x^2+3x+2/x-1计算 [(2x+6)/(x^2-4x+4)]×[(x-2)/(x^2+3x)]-1/x-2化简! 2x-6/4-4x+x^2/(x+2)*x^2-4/3-x,其中x=-1 (x+2分之3x-x+2分之x)/x平方-4分之x(x-1)=4 1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2} x(x+1)(x+2)(x+3)+1 (换元法)