\(a,\left(3x+1\right)^2-\left(x+1\right)^2\)
\(=\left(3x+1-x-1\right)\left(3x+1+x+1\right)\)
\(=2x\left(4x+2\right)\)
\(=4x\left(2x+1\right)\)
\(b,6x-6y-x^2+xy\)
\(=\left(6x-6y\right)-\left(x^2-xy\right)\)
\(=6\left(x-y\right)-x\left(x-y\right)\)
\(=\left(x-y\right)\left(6-x\right)\)
phan tich da thuc thanh nhan tu B=\(\left(x^2-y^2+1\right)^3-x^6-y^6-1\)
phan tich da thuc thanh nhan tu
xm+2 - xm
3.7: Su dung cac hang dang thuc de phan tich cac da thuc sau thanh nhan tu:
a) -y2 + 1/9
b) x4 - 256
c) 9 (x - 3)2 - 4 (x + 1)2
d) 25x2 - 1/81 x2y2
phan tich da thuc thanh nhan tu x^3 +y^3-z^3+3xyz
Phan tich cac da thuc sau thanh nhan tu:
a, -4x2+4x-1
b,(2x+1)2-4(x-1)2
c,(2x+y)2-4x2+12x-9
d, (x+1)2-4(x+1)y2+4y4
Phan tich da thuc thanh nhan tu:
m3+27
\(\frac{1}{27}\)+a3
(a+b)3-c3
x9+1
x3+9x2+27x+27
phan tich da thuc thanh nhan tu a(b^3-c^3)+b(c^3-a^3)+c(a^3-b^3)
81x4+4.Phan tich da thuc thanh nhan tu.
phan tich cac da thuc sau thanh phan tu
6x^2+12xy+5x+10y
