Respuesta :

akasa899

Answer:

x² - 10 + 2x = 2x + 90

x² - 10 + 2x - 2x = 2x - 2x + 90

x² - 10 = 90

x² - 10 + 10 = 90 + 10

x² = 100

square root them both and you get x = 10

Step-by-step explanation:

Answer:

x = 10

Step-by-step explanation:

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