What value of k makes the trinomial x^2- 10x + k a perfect square?

asked Jun 26, 2022 83.3k views

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1 vote

Answer: 25

Step-by-step explanation: (x-a)² = x² - 2ax + a²

From x² - 10x + k we deduce that 10x = 2·5x and a = 5

Then k = 5²2

Lucas Serafim answered Jun 30, 2022

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