isaakbond isaakbond
  • 11-02-2021
  • Mathematics
contestada

The difference of the square of a number and 10 is equal to 3 times that number. Find the negative solution.

Respuesta :

Ralph1313 Ralph1313
  • 14-02-2021

Answer:

-2

Step-by-step explanation:

Let's call the number x. The statement tells us that

x^2 - 10 = 3x, or

x^2-3x-10 = 0

Factoring:

(x-5)(x+2) = 0. Here, we see that there are two solutions: x = 5 and x = -2. So, the negative solution is x = -2.

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