Cual es el resultado de (x+7) (x-2)
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(x + 7) (x - 2)
x² - 2x + 7x - 14
x² + 5x - 14
Solución :
x² + 5x - 14
Productos Notables.
(x + a)(x - b) =
x² + (a - b)x + (a)( - b)
(x + 7)(x - 2) =
x² + (7 - 2)x + (7)(- 2) =
x² + 5x - 14
Respuesta.
x² + 5x - 14