9514 1404 393
Answer:
2 solutions: x = ±√7
Step-by-step explanation:
We can add x^2 -9 to both sides of the equation to get ...
3^2 +(x^2 -9) = 16 -x^2 +(x^2 -9)
x^2 = 7
Taking the square root gives us the two values of x that are solutions.
x = ±√7 ≈ {-2.646, 2.646}
