d) \(x^2-y^2-2x+2y\)

\(=\left(x^2-2x+1\right)-\left(y^2-2y+1\right)\)

\(=\left(x-1\right)^2-\left(y-1\right)^2\)

\(=\left(x-1-y+1\right)\left(x-1+y-1\right)\)

\(=\left(x-y\right)\left(x+y-2\right)\)

\(4xy^2-12x^2y+8xy\)

\(=4xy\left(y-3x+2\right)\)

\(3x^2-6xy+3y^2-12z^2\)

\(=3.\left(x^2-2xy+y^2-4z^2\right)\)

\(=3.\left[\left(x-y\right)^2-\left(2z\right)^2\right]\)

\(=3.\left(x-y-2z\right)\left(x-y+2z\right)\)

\(x^4y^4+4=\left[\left(x^2y^2\right)^2+2..x^2y^2.2+2^2\right]-\left(2xy\right)^2\)

\(=\left(x^2y^2+2\right)^2-\left(2xy\right)^2\)

\(=\left(x^2y^2+2-2xy\right)\left(x^2y^2+2+2xy\right)\)

\(4x^4y-4x^2y^3+12x^3y+12x^2y^2\)

\(=4x^2y\left(x^2-y^2+3x+3y\right)\)

\(=4x^2y\left(x-y-3\right)\left(x+y\right)\)

lẹ

gấp

Mày ra câu hỏi từ từ người ta trả lới cho chứ cứ hối người ta 😡

a 8xy²-12x²y+20xy=4xy(2y-3x+5)

a) \(=3\left(5y+4x\right)\)

b) \(=\left(x-3\right)^2\)

c) \(=y\left(y^2+2y+3\right)\)

1.(x+2)(x² -2x+4)

=(x+2)(x-2)²

=(x+2)(x-2)(x-2)

=x-2

1.(x+2)(x²-2x+4)

=x³+8

a)  \(27x^3-8=\left(3x-2\right)\left(9x^2+6x+4\right)\)

b)  \(8x^3+12x^2+6x+1=\left(2x+1\right)^3\)

c)  \(\left(2y-1\right)^1-4x^2+4x-1=\left(2y-1\right)^2-\left(2x-1\right)^2=\left(2y-1-2x+1\right)\left(2y-1+2x-1\right)\)

\(=\left(2y-2x\right)\left(2y+2x-2\right)=4\left(y-x\right)\left(y+x-1\right)\)