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(x)(x + 2) = 195
(x.x + x.2) = 195
x² + 2x = 195
x² + 2x - 195 = 0
x - 15
x - 13
(x - 15) (x - 13) = 0
Tenemos dos soluciones.
x + 15 = 0
x = 15
......................................................
x - 13 = 0
x = 13
Solución.
( 15 y 13).