Question

z^2- 2z-8 pls solve fast​

Answer 1

Answer:

(z-2)(z-4)

Step-by-step explanation:

z^2-2z-8

We will use mid term break as 8 is not a perfect square so identity will not work .

find the factors of 8

1×8=8

2×4=8

so factor 2 and 4 will be chosen ...

Why ???

because when you add 2 and 4 you get 6

and when you subtract 2 and 4 you get 2

and 2 is the number in the between ..

and

z = a

here

a = 1 so the answer is

(z-2)(z-4)

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