Answer:
[tex]x=\pm3\sqrt{2}[/tex]
Step-by-step explanation:
1) Add 25 to both sides.
[tex]x^2 = -7 + 25[/tex]
2) Simplify -7 + 25 to 15.
[tex]x^2=18[/tex]
3) Take the square root of both sides.
[tex]x=\pm18[/tex]
4) Simplify [tex]\sqrt{18}[/tex] to [tex]3\sqrt{2}[/tex].
[tex]x=\pm3\sqrt{2}[/tex]
