phan tich da thuc sau thanh nhan tu
1)x2-2xy+y2+xz+yz
2)a3x-ab+b-x
phan tich da thuc sau thanh nhan tu
xy(x+y) + yz(y+z) + xz(x+z) + 2xyz
tinh gia tri bieu thuc
3(x-3)(x+7) + (x-4)2 + 48 tai x = 0,5
chung minh rang
x2 - 6x + 10 >0 voi moi x
4x - x2 - 5 <0 voi moi x
Phan tich da thuc thanh nhan tu
xy(x+y)+yz(y+z)+zx(x+z)+2xyz
phan tich da thuc sau thanh nhan tu ab(x^2+y^2)-xy(a^2+b^2)
ai giup minh vs can gap
pt da thuc thanh nhan tu
a](x^2+y^2+z^2)*(x+y+z)^2+(xy+yz+xz)
b]2x^3-x^2+5x+3
c]x^3-7x^2-3
phan tich da thuc thanh nhan tu :xy(x-y)-xz(x+z)+yz(2x+z-y)
Phan tich da thuc thanh nhan tu :
a) x^2 - x - y^2 - y
b) x^2 - 2 xy + y^2 - z^2
c) 5x - 5y + ax - ay
d) a^3 - a^2 x - ay + xy
e) 4x^2 - y^2 +4x + 1
phan tich da thuc sau thanh nhan tu:
a) (3x-2)(4x-3)-(2-3x)(x-1)-2(3x-2)(x+1)
b) x^2(y-z)+y^2(z-x)+z^2(x-y)
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