Respuesta :

Answer:

x = 12

Step-by-step explanation:

5+x2 = 2x2+13

5+x2 = 4+13

5+x2÷2 = 17

5-5+x = 17-5

x = 12

Answer:

x=2i√2,−2i√2

Step-by-step explanation:

take the roots of both sides and solve

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