Tìm x biết : 6(x+2)(x-3)-3(x-2)^2-3(x-1)(x+1)=1
3(x+2)^2+(2x-1)^2-7(x+3)(x-3)=36
(x-1)(x^2+x+1)+x(x+2)(2-x)=5
(x-1)^3-(x+3)(x^2-3x+9)+3(x^2-4)=2
Tìm x biết:
1. (x-2)^2-(x-3)(x+3)=6
2. 4(x-3)^2-(2x-1)(2x+1)=10
3. (x-4)^2-(x-2)(x+2)=6
4.9(x+1)^2-(3x-2)(3x+2)=10
5. 3x +2(5-x)=0
6.x(2x-1)(x+5)-(2x^2+1)(x+4,5)=3,5
7, 3x^2-3x(x-2)=36
8. (3x^2-x+1)(x-1) +x^2(4-3x)=5/2
Tìm x, biết:
a, (2x + 1) - 4(x + 2)\(^2\) = 9
b, 3(x - 1)\(^2\) - 3x(x - 5) = 21
c, (x + 3)\(^2\) - (x - 4)(x + 8) = 1
d, 3(x + 2)\(^2\) + (2x - 1)\(^2\)- 7(x + 3)(x - 3) = 36
e, (x - 1)( x\(^2\)+ x + 1) - x(x + 2)(x - 2) = 5
f, (x - 1)\(^3\)- (x + 3)(x\(^2\)-3x + 9) + 3(x\(^2\) - 4) = 2
Câu 1 : Giải phương trình
a. 5(x-3)-4=2(x-1)
b. 5-(6-x)=4(3-2x)
c. (3x+5)(2x+1)=(6x-2)(x-3)
d. (x+2)2 + 2(x-4)=(x-4)(x-2)
Bài 2 : Giải phương trình
a) x/3 - 5x/6 - 15x/12 = x/4 - 5
b) 8x-3/4 - 3x-2/2 = 2x-1/2 + x+3/4
c) x-1/2 - x+1/15 - 2x-13/6 = 0
d) 3(3-x)/8 + 2(5-x)/3 = 1-x/2 - 2
e) 3(5x-2)/4 - 2 = 7x/3 - 5(x-7)
Bài 3 Giải phương trình
a) (5x-4)(4x+6)=0
b) (x-5)(3-2x)(3x+4)=0
c) (2x+1)(x2+2)=0
d) (8x-4)(x2+2x+2)=0
Bài 4 Giải phương trình
a) (x-2)(2x+3)=(x-1)(x-2)
b) (2x+5)(x-4)=(x-5)(4-x)
c) 9x2 -1 =(3x+1)(2x-3)
d) (x+2)2=9(x2-4x+4)
e)4(2x+7)2 -9(x+3)2 =0
Bài 5 Giải phương trình
a) (9x2 -4)(x+1)=(3x+2)(x2 -1)
b) (x-1)2 -1+x2 =(1-x)(x+3)
c) x4 +x3 3+x+1=0
a) -3x(x+2)²+(x+3)(x-1)(x+1)-(2x-5)²
b) 2(x-3)(x+3)(x+2)-(x-1)(x²-3)-5x(x+4)²-(x-5)²
c) 2x (x - 4)²(x + 5)(x - 2)(x + 2)+2(x + 5)² - (x - 1)²
d) (x + 5)² - 4 x (2 x + 3)²(2 x - 1)(x + 3)(x- 3)
e) -2 x( 3 x + 2)(3 x -2)+ 5( x + 2)²- (x -1) (2 x - 1)(2x +1)
f) (7 x - 8)(7 x + 8) - 10(2x + 3)² + 5 x (3x - 2)² - 4 (x - 5)².
g) (x²- 3)(x² + 3)- 5x²(x + 1) -(x² - 3x) (x² - 2x) + 4x(x + 2)².
Tìm x
a)(2x+1)2-4(x+2)2 =9
b)(3x-1)2 +2(x+3)2 +11(x+1)(1-x)=6
c)(x+1)3 - x2 (x+3)=2
d)(x-2)3 -x(x+1)(x-1)+6x2 =5
e)(x-3)(x2 +3x +9)-x(x+4)(x-4)=5
g)(x-2)3 -(x+5)(x2 -5x+25)+6x2 =11
Tìm x:
a) 2x (x-5) -(x2-10x +25)=0
b) x2 - 9 +3x(x+3) = 0
c) x3 - 16x = 0
d) (2x+3)(x-2) - (x2 -4x+4) = 0
e) 9x2 -(x2 -2x +1)=0
f)x3-4x2 -9x +36 = 0
g) 3x - 6 = (x-1).(x-2)
i) (x-2).(x+2) +(2x+1)2 =-5x.(x-3) =5
k) x2 -1 = (x-1).(2x+3)
l) (2x-1)2 +(x+3).(x-3) -5x(x-2)=6
Bài 1: giải các phương trình sau
a,(3x-1)(x+3)=(2-x)(5-3x) d,(3x+5)(2x+1)=(6x-2)(x-3)
b,(x+5)(2x-1)=(2x-3)(x+1) e,(x+2)2+2(x-4)=(x-4)(x-2)
c,(x+1)(x+9)=(x+3)(x+5) f,(x+1)(2x-3)-3(x-2)=2(x-1)2
Tìm x, biết:
1) 2x (x-3) + 5x - 15 = 0
2) x ( 2x - 7) - 4x + 14 = 0
3) x2 - 12x + 36 = 0
4) (x + 3) (x2 - 3x + 9) - x (x -1)(x + 1) -27 = 0