Question

Phân tích nha :

x⁴ - 4y⁴

Answer 1

\(x^4-4y^4\)

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

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

Answer 2

\(x^4-4y^4\)

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

Answer 3

\(x^4+4y^4\)

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

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

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