3x(2x-4)+(6x-1)(x+2)
=6x(x-2)+(6x+1)(x+2)
.......
3x(2x-4)+(6x-1)(x+2)
=6x(x-2)+(6x+1)(x+2)
.......
Tìm x:
3x(2x-4)+(6x-1)(x+2)=25
tìm x
1) (3x-2)(9x^2+6x+4)-(2x-5)(2x+5)=(3x-1)^3-(2x+3)^2+9x(3x-1)
2) (2x+1)^3-(3x+2)^2=(2x-5)(4x^2+10x+25)+6x(2x+1)-9x^2
Tìm x:
a) (x-20) mũ 2 -(x+1)(x+3)=-7
b) (3x+5)(4-3x)=0
c) x mũ 3 -9x=0
d)2/3x (x mũ 2 -4)=0
e) (2x+1)-x(2x+1)=0
f)(2x-1) mũ 2 -(2x+5) (2x-5) =18
g)x mũ 2 -25 =6x-9
Tìm x
2x3-50x=0
2x(3x-5)-(5-3x)=0
9(3x-2)=x(2-3x)
(2x-1)2-25=0
25x2-2=0
X2-25=6x-9
(2x-1)2-(2x+5)(2x-5)=18
2) (2x+1)^3-(3x+2)^2=(2x-5)(4x^2+10x+25)+6x(2x+1)-9x^2
Tìm x
bài 1: Phân tích đa thức thành nhân tử
a)\(3x^3+6x^2\)
b)\(x^2-y^2-2x+2y\)
bài 2:
a) tìm x:\(\left(2x-1\right)^2-25=0\)
b) Tìm đa thức Q biết: \(Q.\left(x^2+3x+1\right)=x^3+2x^2-2x-1\)
Gisup mik vs
Cảm ơn
Tìm x
1. (3x+5)(4-3x)=0
2. 9(3x-2)=x(2-3x)
3. 25x^2 -2=0
4. x^2- 25=6x-9
5. (2x-1)^2-(2x+5)(2x-5)=18
6. x^3-8=(x-2)^3
7. x^3-4x^2+4x=0
8. x^2- 25+2(x+5)=0
9. 2(x^2+8x+16)- x^2+4=0
10. x^2(x-2)+7x=14
* Tìm x: 3x(2x-4)-(6x-1)(x+2)=25
* Rút gọn phân thức: ( x^2 - 2xy + y^2 )(x-y) - (x-y)(x^2 + xy + y^2)
. Tìm x, biết:
a) 6x.(x – 5) + 3x.(7 – 2x) = 18 b) 2x.(3x + 1) + (4 – 2x).3x = 7 c) 0,5x.(0,4 – 4x) + (2x + 5).x = -6,5 | d) (x + 3)(x + 2) – (x - 2)(x + 5) = 6 e) 3(2x - 1)(3x - 1) – (2x - 3)(9x - 1) = 0 |