(3x - 2)(4x - 5) - (2x - 1)(6x + 1) = 0
12x2 - 15x - 8x + 10 - 12x2 - 2x + 6x + 1 = 0
- 19x = - 11
x = 11/19
(3x - 2)(4x - 5) - (2x - 1)(6x + 1) = 0
12x2 - 15x - 8x + 10 - 12x2 - 2x + 6x + 1 = 0
- 19x = - 11
x = 11/19
( 3x-2) ( 4x-5 ) - ( 2x-1 ) ( 6x+2 ) = 0
Tìm x biết:
( 3x-2) ( 4x-5 ) - ( 2x-1 ) ( 6x+2 ) = 0
Tìm x :
a) x ( x - 1 ) - x^2 + 2x = 5
b) 4x ( 3x + 2 ) - 6x ( 2x + 5 ) + 21 ( x - 1 ) = 0
c) 2x( x + 1) - x^2 ( x + 2 ) + x^3 - x + 4 = 0
tìm x biết
a, x(2x-7)-4x+14=0
b, x(x-1)+2x-2=0
c, 2x^3+3x^2+2x+3=0
d, x^3+6x^2+11x+6=0
TÌM X BIẾT \(\frac{x-1}{x^2-9x+20}+\frac{2x-2}{x^2-6x+8}+\frac{3x-3}{x^2-x-2}+\frac{4x-4}{x^2+6x+5}=0\)
Tìm x, biết:
x(x-2)+x-2=0x3+x2+x+1=02(x+3)-x2-3x=02x(3x-5)=10-6x1) Tìm x :
a) 4x2 - 32x = 0
b) ( 2x - 1 )2 + ( -x - 1 )2 + 2( 1 + x )( 1 - 2x ) = 0
c) 1phần2x( 4x - 3 ) + 3x( -2phan3x + 1 ) = 1phần3
d) x2 - 25 = 6x - 9
bài 2: Tìm x,biết :(cách làm nữa nhé )
a) 9x2 -49=0
b)(x+3)(x2 -3x+9)-x(x-1)(x+1)-27=0
c) (x-1)(x+2)-x-2=0
d)x(3x +2)+( x+1)2 -(2x-5)(2x+5) = 0
e) (4x+1)(x-2)-(2x-3)(2x+1)=7