Question

Factorize z^2-2z-8
please help me​

Answer 1

Answer:

(z-4) (z-2)

Step-by-step explanation:

z²-2z-8

z²-4z+2z-8

z(z-4) +2(z-4)

(z-4) (z+2)

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Answer 2

Answer:

(Z-4)(Z+2)

Step-by-step explanation:

$Z^{2} -2Z-8$

BY MIDDLE TERM

$Z^{2} -(4-2)Z-8$

$Z^{2} -4Z+2Z-8$

$Z(Z-4)+2(Z-4)$

$(Z-4)(Z+2)$