Find the factors of the expression — task. Maths CBSE Live product, Class 9 (2026-27).

Which of the following is the factors of \(49x^2 - 4\)?

\((7x + 2)\) and \((7x + 2)\)
\((7x - 2)\) and \((7x + 2)\)
\((2x - 7)\) and \((2x + 7)\)
\((2x - 7)\) and \((2x - 7)\)

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