factorisation of z^2+1/z^2-2z-2/z
Answers
Answered by
1
Answer:
HERE IS UR ANSWER:-
= z⁴-2z³-2z+1/2z
Answered by
0
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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