Question

factorise z²-z-2 please saulve​

Answer 1

Step-by-step explanation:

z²-z-2=

z²+z-2z-2=

z(z+1)-2(z+1)

the factors are

(z+1) and (z-2)

z= -1, 2

Answer 2

z²-z-2

Splitting the middle term ;

z²+1z-2z-2=0

z(z+1)-2(z+1)=0

(z-2)(z+1)=0

(z-2)=0 or (z+1)=0

z= 2 or z = (-1)

$\boxed{ \bf{The \: \: factors \: \: are \: \: 2 \: \: and \: \: (-1)}}$

$\pink{ \tt{Hope \: \: this \: \: helps \: \: you \: !}}$