Respuesta :

rose5656

Answer:

x² - 4 = 0

x² = 4

x =± √4

x = +2 or x = -2.

YTAllSubjects

Answer:

2 and -2 (±2)

Step-by-step explanation:

Step 1: Move -4 to the other side of the equal sign; we get x² = 4.

Step 2: A lot of people miss the negative answer! The square root of 4 is equal to both positive 2 and negative 2.

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