\(x^7+x^5+x^4+x^3+x^2+1\)
\(=x^7+x^6-x^6-x^5+2x^5+2x^4-x^4-x^3+2x^3+2x^2-x^2-x+x+1\)
\(=\left(x^7+x^6\right)-\left(x^6+x^5\right)+\left(2x^5+2x^4\right)-\left(x^4+x^3\right)+\left(2x^3+2x^2\right)-\left(x^2+x\right)+\left(x+1\right)\)
\(=x^6.\left(x+1\right)-x^5.\left(x+1\right)+2x^4\left(x+1\right)-x^3\left(x+1\right)+2x^2\left(x+1\right)-x\left(x+1\right)+\left(x+1\right)\)
\(=\left(x+1\right)\left(x^6-x^5+2x^4-x^3+2x^2-x+1\right)\)
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 thanh nhan tu x2+2xy+7x+7y+10
phan tich da thuc thanh nhan tu: 4x^4-32x^2+1
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
phan tich da thuc thanh nhan tu
x^5+x+1
phan tich da thuc sau thanh nhan tu: x5+x+1
phan tich da thuc thanh nhan tu x^5+x+1
x^8+x^4+1
phan tich da thuc thanh nhan tu
phan tich da thuc thanh hinh nhan tu X2+x-1