Respuesta :
Answer:
x={9,-15}
Step-by-step explanation:
|x+3|=12 means
x+3 could be 12 or -12 since |12|=12 and |-12|=12 are true
x+3=12 x+3=-12
x=12-3 x=-12-3
x=9 x=-15
Answer:
x={9,-15}
Step-by-step explanation:
|x+3|=12 means
x+3 could be 12 or -12 since |12|=12 and |-12|=12 are true
x+3=12 x+3=-12
x=12-3 x=-12-3
x=9 x=-15