Answer
False; {$x|(-∞,-5)$U$(5,∞)$, $x$ belongs to the Realm of Real Numbers}
Work Step by Step
$$x^2 \gt 25$$ $$x^2 - 25\gt 0$$ $$(x+5)(x-5) \gt 0$$ where we need values of $x$ that satisfy the following condition: that when both factors are multiplied, the result is $greater$ $than$ $0$, i.e., positive.
