तू के स्क्वेयर प्लस के माइनस वन
Answers
Answer:
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Answer:
होप दीस हेल्प्स्
Step-by-step explanation:
2k² + k - 1
= 2k² + 2k - k - 1
= 2k (k + 1) - 1 (k + 1)
= (2k-1) (k+1)
k = 1/2 or k = -1