QUESTION IMAGE
Question
¿cuál es el valor de? ( x ) si ( 5^{x + 2} = 5^9 )? ( x = -11 ) ( x = 11 ) ( x = -7 ) ( x = 7 )
Step1: Igualar exponentes (base igual)
Si $a^m = a^n$ con $a>0, a
eq1$, entonces $m=n$. Así:
$x+2 = 9$
Step2: Despejar $x$
Restar 2 en ambos lados:
$x = 9 - 2$
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$x = 7$