Question

x^2-4y^2-z^2-4xy factories​

Answer 1

Answer:

x^2+4y^2-z^2-4xy

(using a^2+b^2-2ab=(a-b)^2, factorise the expression. )

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

(now, using a^2-b^2=(a-b)(a+b), factorise the expression)

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

Step-by-step explanation: