The answer is x = -4. Applying the square root property of equality basically means that we need to take the square roots of both sides.

Which turns into:

Then we can isolate x by subtracting 9 from both sides:
Answer:
The Domain.
Step-by-step explanation:
That is the Domain. For example the domain of the function √x is the set
{x : x ≥ 0}.
Answer:
In (3x)^2, you are squaring both the 3 and the x:
9x^2
in 3x^2, you are squaring just the x:
3x^2
(2,0)
(-6,0)
I just inserted the equation into a graphing calculator. Kinda lazy tonight :/