Expand using identity (4a-1/a)(4a+1/a)
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⭕ (4a - 1/a)(4a + 1/a)
❣ Using (a + b)(a - b) ➡ a^2 - b^2
⏺ (4a)^2 - (1/a)^2
⏺ 16a^2 - 1/a^2
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⭕ (4a - 1/a)(4a + 1/a)
❣ Using (a + b)(a - b) ➡ a^2 - b^2
⏺ (4a)^2 - (1/a)^2
⏺ 16a^2 - 1/a^2
-------------------------
✒ Hope Helps.
✒ Mark brainliest
✒ Follow me
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