Respuesta :

Answer:

x²-7 = 0   part 1 and part 2 :  x = sqrt(7) or x = -sqrt(7)

Step-by-step explanation:

Solve for x:

x^2 - 7 = 0

Add 7 to both sides:

x^2 = 7

Take the square root of both sides:

Answer:  x = sqrt(7) or x = -sqrt(7)