Mathematics
One of the factors of (25x2 - 1) + (1 + 5x)2 is
5 + x
5 - x
5x - 1
10x
Factorisation
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Answer
(25x2 - 1) + (1 + 5x)2 = 25x2 - 1 + 1 + 25x2 + 10x
= 50x2 + 10x
= 10x(5x + 1).
Hence, Option 4 is the correct option.
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