x3 +2x2y-x-2y
= (x3 - x) + (2x2y - 2y)
= x(x2 - 1) + 2y(x2 - 1)
= (x2 - 1) (x + 2y)
= ( x - 1 ) (x + 1) ( x + 2y )
x3 +2x2y-x-2y
= (x3 - x) + (2x2y - 2y)
= x(x2 - 1) + 2y(x2 - 1)
= (x2 - 1) (x + 2y)
= ( x - 1 ) (x + 1) ( x + 2y )
1) x3-x2+2x-2 4) ax-2x-a2+2a 7) x2-6xy-25z2+9y2
2) x2-y2+2x+2y 5) 2xy +3z+6y+xz 8) x3-2x2+x
3) x2/4+2xy+4y2-25 6) x2y2+yz+y3+zx2 9) x4+4
a) (x3 – x2 + x)(121 – 25y2 – 10y) – (x3 – x2 + x) – (121 – 25y2 – 10y) +1
X4 – 14x3 + 71x2 – 154x + 120
Giúp mik với ạ!!!!
1) x2 - 11x + 3
2) 1+7x3
3) x3 + 3x2 - 16x - 48
4) x3 - x2 – x - 1
5) x3 + 2x2 - 2x - 1
6) 4x(x - 3y )+ 12y(3y - x)
a) (x3 – x2 + x)(121 – 25y2 – 10y) – (x3 – x2 + x) – (121 – 25y2 – 10y) +1
b) X4 – 14x3 + 71x2 – 154x + 120
Giúp mik vs
1) x3 + 2x2 - 2x - 1
2) 4x(x - 3y )+ 12y(3y - x)
x3-0,25.x=0
Tìm x, biết:
x3 + 3x2 + 3x =0
Mn giúp mik nhen^^
Phân Tích Đa Thức Thành Nhân Tử:x5-x3-2x2-x
(x-2y)3+(x+2y)3