10-11-2021
Mathematics

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A number is equal to its own square minus 42 Found two possible values of x

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10-11-2021

Answer:

-6 or 7.

Step-by-step explanation:

If the number is x, then:

x = x^2 - 42

x^2 - x - 42 = 0

( x - 7)(x + 6) = 0

x = -6, 7.

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