Question

4xy-x^2-4y^2+z^2 Factorise The Following

Answer 1

Step-by-step explanation:

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

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

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

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

(z-x+2y)(z+x-2y) [a^2-b^2 =(a-b)(a+b)]

Answer 2

Step-by-step explanation:

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

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

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

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

(z-x+2y)(z+x-2y) [a^2-b^2 =(a-b)(a+b)]