kim0923 kim0923
  • 02-12-2020
  • Mathematics
contestada

La suma de un número natural y su cuadrado es de 72. Encuentra el número del que se trata.

Respuesta :

Adetunmbiadekunle Adetunmbiadekunle
  • 09-12-2020

Answer:

8

Step-by-step explanation:

Sea el número x El cuadrado será x ^ 2

Entonces la suma será; x ^ 2 + x = 72 x ^ 2 + x-72 = 0

x ^ 2 + 9x-8x-72 = 0

x (x + 9) -8 (x + 9) = 0

(x + 9) (x-8) x = 8 o -9

Como solo estamos considerando números naturales, la respuesta correcta es 8

Answer Link

Otras preguntas

Which chemical equation best describes the reaction of potassium metal with fluorine gas to form solid potassium fluoride? A. K(s) + F2(g) → KF2(s) B. K(s) + F(
example of onomatopoeia in the seven ages of man
What is the highest mountain on each continent?
What's the other word a weak or lifeless feeling
what we need to become success
What's the word for to talk on and on pointlessly, without clear direction
what is glossities and deficiency
I figured out the 1st question but I do not understand the second one...please show me step by step! Thank you!
A sound wave of 70 cm travels 840 m in 2.5 sec. What is the velocity and frequency of sound?
which designer started as a fashion illustrator before focusing on industrial design?