\(4x-\left(2x+1\right)=3-\dfrac{1}{3}\)
\(\Rightarrow4x-2x-1=3-\dfrac{1}{3}\)
\(\Rightarrow2x-1=\dfrac{8}{3}\)
\(\Rightarrow2x=\dfrac{8}{3}+1\)
\(\Rightarrow2x=\dfrac{11}{3}\)
\(\Rightarrow x=\dfrac{11}{3}:2\)
\(\Rightarrow x=\dfrac{11}{6}\)
: Tìm x, biết:
a) 3x( 4x- 1) - 2x(6x- 3 )=30 b) 2x(3-2x) + 2x(2x-1)=15
c) (5x-2)(4x-1) + (10x +3)(2x - 1)=1 d) (x+2) (x+2)- (x -3)(x+1) = 9
e) (4x+1)(6x-3) = 7 + (3x – 2)(8x + 9) g) (10x+2)(4x- 1)- (8x -3)(5x+2) =14
1)(2x-3).(x2+4x-3)-(3x-2).(5x-1)
2)(4x2-3x-1).(x-2)-(4x-3).(2x+1)
(2x-1).(4x2+2x+1)-(3+2x).(3+2x).(3+2x)+36.(x-1).(x-1)
Bài 2 Tìm x biết 1, (2x-2).(3x+1)-(3x-2).(2x-3)=5 2,(1-3x).(3x-5)-(2x-4)(2-3x)=x-6 3,(2x-1).(4x^2+2x+1)-(2x+1)(4x^2-2x+1)=5x+6 Giúp tớ với
tìm x biết:
a)(2x+2)(2x-2)-4x(x+5)=8
b)(4x+5)(4x-5)-8x(2x-7)=11
c)(1/2x-3)(1/2x+3)-1/4x(x+5)=11/2
d)(3x+2)(3x-2)-4x(x+2-5x2=18
h(x)=4x^2-2x^3-2x+2x^3-(-x)+x+(-5x)+1+4x^2
tìm nghiệm đa thức
Bài : Rút gọn
1) (3x - 5).(7-5x)-(5x+2).(2-3x)
2) (3x2+5x-2).(2x2-4x+3)
3) (3x2+5x-2).(2x2-4x+3)
4)4(2x3+x)-(2x-1)(4x2+3x+1)
5) 2x(x+3)-(x-5).(7+2x)
Nhanh + đúng auto tick :Đ!
Giải phương trình :
a) || 2x - 3 | - 4x | = 5
b) | 3 - 2x | - 4x = x + 2
c) | 2x - 1 | + | 2x + 3 | = 4
d) |3x - 1| - | 3 - 2x | = 2
Giúp mk với
a) (5x-1) . ( 2x-1/3)=0
b) ( -0,6x-1/2) .3/4-(-1)=1/3
c) ( 4x-9) ( 2,5+-7/3x)=0
d) 1/4x-1+1/3.(5/2x-6)-( 3/8x +)=4,5
