Factorise(3A): x4-4y4+4y2z2-z4

Tomorrow I have my exams so please help me!

(x^2+2y-z^2)(x^2-2y^2+z^2)

Step-by-step explanation:

Since both terms are perfect squares, you would factor using the difference of squares formula

a^2 - b^2 = (a+b)(a-b)

where a = x^2 (√x^4) and b = 2y^2-z^2 (√4y^4z^4)

a^2-b^2 = (a+b)(a-b)

plug a & b in

(x^2+2y-z^2)(x^2-2y^2+z^2)

coin flip

non-answer:

choosing

sorry if this isnt what you're looking for i dont really understand the question