X2 - 91 = 53x2 + 18 = 187x2 - 56 = 169?
X2 - 91 = 53 x2 + 18 = 187 x2 - 56 = 169.
X2 - 91 = 53 x2 + 18 = 187 x2 - 56 = 169.
En resumen
X² - 91 = 53 X² = 53 + 91 X² = 144 X = ±√(144) X = ±12 X = 12, x = - 12 x² + 18 = 187 X² = 187 - 18 X² = 169 X = ±√(169) X = ± 13 X = 13, x = - 13 x² - 56 = 169 X² = 169 + 56 X² = 225 X = ±√(225) X = ±15 X = 15, x = - 15.
X² - 91 = 53
X² = 53 + 91
X² = 144
X = ±√(144)
X = ±12
X = 12, x = - 12
x² + 18 = 187
X² = 187 - 18
X² = 169
X = ±√(169)
X = ± 13
X = 13, x = - 13
x² - 56 = 169
X² = 169 + 56
X² = 225
X = ±√(225)
X = ±15
X = 15, x = - 15.
La verdad esque es la misma posibilidad de que caiga cualquiera de las dos.
Entre los dos tardaran un total de 12 minutos en cortar el cesped.