Answer:
-3
Explanation:
a² = 64
Taking the square root of both sides, we get:
a = ±√64
a = ±8
Therefore, the solutions to the equation a² = 64 are a = 8 and a = -8.
2x-2 = 16
Adding 2 to both sides, we get:
2x = 18
Dividing both sides by 2, we get:
x = 9
Therefore, the solution to the equation 2x-2 = 16 is x = 9.
3y² = 27
Dividing both sides by 3, we get:
y² = 9
Taking the square root of both sides, we get:
y = ±√9
y = ±3
Therefore, the solutions to the equation 3y² = 27 are y = 3 and y = -3.