Question

factorise z square-2 z+1 ​

Answer 1

please follow me and mark me as a brainlist please...

To Factorise :- z

2

−z−2

By splitting the middle term

=z

2

−2z+z−2

=z(z−2)+1(z−2)

=(z+1)(z−2)

So, z

2

−z−2=(z+1)(z−2)

Answer 2

Answer:

(z-1)(z-1)

Step-by-step explanation:

z

${z }^{2} - 2z + 1 \\ = {z}^{2} - z - z + 1 \\ = z(z - 1) - 1(z - 1) \\ = (z - 1)(z - 1)$