(x + 2)(x - 1) + 26 < (x + 4)(x + 5)?

Resolver.

Aplicas productos notables.

(x + a)(x - b) =

x² + (a - b)x + (a)( - b)

(x + 2)(x - 1) + 26 < (x + 4)(x + 5)

x² + (2 - x)x + 26 < x² + (4 + 5)x + (4)(5)

x² + x - 2 + 26 < x² + 9x + 20

x² + x + 24 < x² + 9x + 20

x² + x - x² - 9x < 20 - 24 - 8x < - 4

x > 4 / 8

x > 1 / 2 (xxxxxxxxxxxxxxxxxxxxxxx 1 / 2

Solución.

(1 / 2 , infinito).