Question

For what values of x is the equation X^2-x=20 true?

Answer 1

Answer: x = 5 or x = -4

Explanation:

Given equation

x² - x = 20

Subtract 20 on both sides

x² - x - 20 = 0

Cross factorize the equation

x -5

x 4

Factorize the equation

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

`\boxed{x=5}` or
`\boxed{x=-4}`

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