derekkmarks31 derekkmarks31

18-06-2021
Mathematics

contestada

Translate to an algebraic expression.
A number is 30 less than its square. Find all such numbers.

Respuesta :

altavistard altavistard

27-06-2021

Step-by-step explanation:

Let the number be n. Then: n = n^2 - 30 .

Rewriting this in standard quadratic format, we get:

n^2 - n - 30.

This factors into: (n - 6)(n + 5),

whose solutions are 6 and -5

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