taylormrobert11 taylormrobert11

16-06-2021
Mathematics

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The sum of a number and its square is 20

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Аноним Аноним

16-06-2021

Answer:

-5

4

Step-by-step explanation:

x + x² = 20

x² + x - 20 = 0

Factor

(x + 5)(x - 4) = 0

x = {-5, 4}

-5 + 25 = 20

4 + 16 = 20

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