Respuesta :

Answer:

9

Step-by-step explanation:

6x² +1=487

6x² = 487-1 = 486

6x² = 486

divide both sides by 6

x²= 486/6 = 81

x²=81

x= √81= 9

Answer:

-9 ans 9

Step-by-step explanation:

because im super cool and smart