i need this today because my exam is on 24 . step by step answer
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Step-by-step explanation:
(2k + 4)² - (k - 5)² = 26k
=4k² + 16 + 16k - k² - 25 + 10k = 26k
= 3k² + 26k - 9 = 26k
= 3k² = 9
= k² = 3
= k = + - √3
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