6(x-3)(x-4)-6x(x-2)=4
<=>6(x2-7x+12)-6x2+12x=4
<=>6x2-42x+72-6x2+12x-4=0
<=>-30x+68=0
<=>-30x =-68
<=>x =34/15
6(x-3)(x-4)-6x(x-2)=4
<=>6(x2-7x+12)-6x2+12x=4
<=>6x2-42x+72-6x2+12x-4=0
<=>-30x+68=0
<=>-30x =-68
<=>x =34/15
Tìm x biết 6(x-3)(x-4)-6x(x-2)=4
Tìm x biết: (x+2)^3-x^2(x-6)-4=0 6x^2-(2x-3)(3x+2)=1
tìm x biết
6(x-3)(x-4)-6x(x-2)=4
Tìm đkxđ của: 1, 3x/ 4x-8 2, 2x/ x²-9 3, 6/x³+1 4, 6x²/x²-2x+1 5, x-2/x²+3 6, 2x/x²+3+2
phân tích
1,(x-2)^4+(x-3)^4-1
2,(x-1)^4+(x+3)^4-512
3,(x-2)^6+(x-4)^6-64
4,x^4-3x^3+6x^2+3x+1
5,3x^4-2x^3-15x^2-2x+3
6,x^6-2x^5-4x^4+6x^3+4x^2-2x-1
phân tích đa thức
x^4+6x^3+11x^2+6x+1
x^4+x^3+x^2+x+1
6x^4+5x^3-38x^2+5x+6
x^4+5x^3-12x^2+5x+1
Bài 3: phân tích thành nhân tử:
1/ 9x^3-xy^2
2/x^2-3xy-6x+18y
3/x^2-3xy-6x+18y 3/6x(x-y)-9y^2+9xy
4/ 6xy-x^2+36-9y^2
5/ x^4-6x^2+5
6/ 9x62-6x-y^2+2y
Bài 4:Tìm x, biết:
1/ (x-1)(x^2+x+1)-x^3-6x=11
2/ 16x^2-(3x-4)^2=0
3/ x^3-x^2+3-3x=0
4/ x-1/x+2=x+2/x+1
5/1/x+2/x+1=0
6/ 9-x^2/x : (x-3)=1
Bài5: 1/ 12x^3y^2/18xy^5
2/10xy-5x^2/2x^2-8y^2
3/ x^2-xy-x+y/x^2+xy-x-y
4/ (x+1)(x^2-2x+1)/(6x^2-6)(x^3-1)
5/ 2x^2-7x+3/1-4x^2
phan tích đa thưc thành nhân tử
a) x^2+10x+21
b) x^3-7x+6
c) x^3-7x+6
d) x^3+5x^2+8x+4
e) x^3-9x^2+6x
g) (x+2)(x+3)(x+4)(x+5)-24
h) x^4+6x^3+7x^2-6x+1
làm phép chia :
a) (x^4 -2x^3 + 2x -1) : (x^2 - 1)
b) (x^3 -8) : (x^2 + 2x +4)
c) (x^6 - 2x^5 + 2x^4 + 6x^3 - 4x^2)n: 6x^2
d) (-2x^5 + 3x^2 - 4x^3) :2x^2
e) (15x^3 - 10x^2 + x - 2) : (x - 2)
f) (2x^4 - 3x^3 - 3x^2 + 6x - 2) : (x^2 - 2)