Respuesta:
x2+19x+24=396
x2+19x=396-24
21x=372
x=372/21
x=17.714285
comprobación
(17.714285)2+19(17.714285)+24=396
35.42857+336.57141+24=396
396=396
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Respuesta:
x2+19x+24=396
x2+19x=396-24
21x=372
x=372/21
x=17.714285
comprobación
x2+19x+24=396
(17.714285)2+19(17.714285)+24=396
35.42857+336.57141+24=396
396=396