Answer: (x+5)
Explanation:
The only other possible factor is (x+5). We can test it out to see if it multiplies out to x²-25.
(x+5)(x-5) [FOIL]
x²-5x+5x-25 [combine like terms]
x²+0x-25
x²-25
Therefore, we know that (x+5) is the correct other factor.
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