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Popular >

The product of two consecutive integers is 420. Which quadratic equation can be used to find x, the lesser number

Solución

The product of two consecutive integers is 420. Which quadratic equation can be used to find x, the lesser number

Solución

The numbers : 20, 21 or - 21, - 20

Pasos de solución

Represent the numbers with

x

:

First number : x

Consecutive number : x + 1

A.T.Q.:

x (x + 1) = 420

Resolver

x (x + 1) = 420 : x = 20, x = - 21

Sustituir

x = 20 : 21

Sustituir

x = - 21 : - 20

The numbers : 20, 21 or - 21, - 20

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