Ta có:
\(x^3-x^2-x-2=x^3-2x^2+x^2-2x+x-2\)
\(=x^2\left(x-2\right)+x\left(x-2\right)+x-2=\left(x-2\right)\left(x^2+x+1\right)\)
Ta có:
\(x^3-x^2-x-2=x^3-2x^2+x^2-2x+x-2\)
\(=x^2\left(x-2\right)+x\left(x-2\right)+x-2=\left(x-2\right)\left(x^2+x+1\right)\)
phan tich da thuc thanh nhan tu
x^2-x-y^2-y
x^2-2xy+y^2-z^2
bai 32 va 33 sbt
lop 8 bai phan tich da thuc thanh nhan tu bang cach nhom hang tu
cau 1 :phan tich da thuc thanh nhan tu a)5x3y-10x2y2+5xy3 b)x3 2y-1-125 2y-1 c)x2-6x-4y2+9 d)x2-xy+2y-2x e)4x2-4y2+4x+1 minh can gap
Phan tich da thuc thanh nhan tu : x2 - 4x -y2+4
Phan tich da thuc sau thanh nhan tu
6x^3+x^2+x+1
phan tich da thuc sau thanh nhan tu: x5+x+1
phan tich da thuc sau thanh nhan tu
6x^3+x^2+x+1
phan tich cat da thuc sau thanh nhan tu
a) x^4 + 1 - 2x^2
2.phan tich da thuc sau thanh nhan tu: (x4+x+1)4+1
phan tich da thuc sau thanh nhan tu:
a)(x-y+4)^2-(2x+3y-1)^2