If 13 times a number is subtracted from the square of the number, the result is 30. Find the number

Answer 1

x = your number

If 13 times a number is subtracted from the square of the number, the result is 30 means:

x² - 13 x = 30

Try to solve this quadratic equation.

The solutions are:

x = - 2 and x = 15

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( - 2 ) ² - 13 ∙ ( - 2 ) = 4 + 26 = 30

15 ² - 13 ∙ 15 = 225 - 195 = 30
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Answer 2

if 13 times a number is subtracted form the square of the number, the resuit is 30. find the number

Answer 3

Good answers thanks