christian123kokilo christian123kokilo

17-02-2021
Mathematics

contestada

a) n(n + 2) 224
b)x² + x = 156

Respuesta :

zaidfarqad zaidfarqad

17-02-2021

Step-by-step explanation:

b)

[tex] {x}^{2} + x - 156 = 0 \\ (x + 13)(x - 12) = 0 \\ x = - 13 \\ or \\ x = 12[/tex]

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