x 2 - 2007x - 2008
= x 2 + x - 2008x - 2008
= ( x 2 + x ) - ( 2008x + 2008 )
= x ( x + 1 ) - 2008 . ( x + 1 )
= ( x + 1 ) . ( x - 2008 )
x 2 - 2007x - 2008
= x 2 + x - 2008x - 2008
= ( x 2 + x ) - ( 2008x + 2008 )
= x ( x + 1 ) - 2008 . ( x + 1 )
= ( x + 1 ) . ( x - 2008 )
Phan tich da thuc thanh nhan tu
a) \(x^2+7x+6\)
b) \(x^4+2008x^2+2007x+2008\)
phan tich da thuc thanh nhan tu (xy+1)^2 -(x-y)^2 ai giup minh voi
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^2+xy)^2-(y^2+xy)^2
Ai giup minh voi a
x^2 - 2xy + y^2 - z^2 phan tich da thuc thanh nhan tur
Phan tich da thuc thanh nhan tu :x^2+7x-15
phan tich da thuc sau thanh nhan tu
x^3+2x^2+x+2
giup minh nhe cam on nhieu
phan tich da thuc thanh nhan tu(x^2+X)+3(x^2+x)+2
phan tich da thuc thanh nhan tu (x2-x+2)+(x-2)