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What is the factorization of 121b^4 -9
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What is the factorization of 121b^4 -9

User Bedrin
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121 {b}^(4) - 9 \\ {11}^(2) {b}^(2) {b}^(2) - {3}^(2) \\ = (11 {b}^(2) - 3)(11 {b}^(2) + 3)

User LStoilov
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