\(=3^2-\left(x-y\right)^2=\left[3-\left(x-y\right)\right]\left[3+\left(x-y\right)\right]=\left(3-x+y\right)\left(3+x-y\right)\)
\(9-x^2+2xy-y^2\)
\(=9-\left(x^2-2xy+y^2\right)\)
\(=3^2-\left(x-y\right)^2\)
\(=\left(3-x+y\right)\left(3-x-y\right)\)
x^2 - 2xy + y^2 - z^2 phan tich da thuc thanh nhan tur
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 thanh cac nhan tu da thuc
x^2-25+y+2xy
Phan tich da thuc thanh nhan tu
x2-2xy+y2-3x+3y
Phan tich da thuc thanh nhan tu x2_2xy+y2-9z2
1+2xy-x2-y2
giải bài tap phan tich da thuc thanh nhan tu
(x^2+x)^2+3(x^2+x)+2
x^2+2xy+y^2+2x+2y-15
phan tich da thuc thanh nhan tu
phan tich da thuc thanh nhan tu
a) xy-y2+2x-2y
b) x2+2xy+y2-9
phan tich da thuc sau thanh nhan tu
1)x2-2xy+y2+xz+yz
2)a3x-ab+b-x
