emmaleighhuskins16 emmaleighhuskins16

04-05-2021
Mathematics

contestada

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

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keijosalonen keijosalonen

05-05-2021

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

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