Answer:[tex]x=5,-5[/tex]
Step-by-step explanation:
[tex]-x^{2} +25=0[/tex]
Factor out -1
[tex]-(x^{2} -25)=0[/tex]
factor
[tex]-(x+5)(x-5)=0[/tex]
Solve for zeros
[tex]x+5=0\\x-5=0[/tex]
[tex]x=5,-5[/tex]
