factors of z²+1/z²+2-2z-2/z
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Answered by
8
1.x^2-(a-1/a)x+1 factorise the following
https://brainly.in/question/4301404
2.Factorise x^4-(x-z)^4
https://brainly.in/question/14993176
Answered by
1
Answer:
(z + - 2) (z +
)
Step-by-step explanation:
[FIRST SQUARE (z +
) USING IDENTITY ]
(z +
)² = z² +
+ 2
[NOW (- 2z -
) IS MISSING, SO ADD THEM BOTH THE SIDES]
⇒ (z +
) × (z +
) - 2z -
= z² +
+ 2 - 2z - 
⇒ (z +
) × (z +
) - 2 (z +
) = z² +
+ 2 - 2z - 
[ HERE z +
AND - 2 ARE COMMON]
⇒ (z +
- 2) (z +
) = z² +
+ 2 - 2z - 
HENCE FACTORS OF z² +
+ 2 - 2z -
ARE ⇒
(z +
- 2) (z +
)
THANK YOU
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