Answer:
[tex]\tt x=\pm5\sqrt{2}[/tex]
Step-by-step explanation:
[tex]\tt x^2 - 25 = 25[/tex]
[tex]\tt x^2-25+25=25+25[/tex] (Add 25 to both sides)
[tex]\tt x^2=50[/tex] ( Take square of both sides)
[tex]\tt x=x=\sqrt{50},\:x=-\sqrt{50}[/tex]
[tex]\tt x=\pm5\sqrt{2}[/tex]
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