Let's factorize

$25x^2-\frac{1}{9}{y}^2{z}^2$

Let's factorize

$7a{x}^2+14ax+7a$

Let's factorize

$3x^4-6x^2{a}^2+3a^4$

Let's factorize

$4b^2{c}^2-{(b^2+c^2-a^2)}^2$

Let's factorize

$64a{x}^2-49a{(x-2y)}^2$

Let's factorize

$x^2-9-4xy+4y^2$

Let's factorize

$x^2-2x-y^2+2y$

Let's factorize

$3+2a-a^2$

Let's factorize

$x^4-1$