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Please explain step by step, thank you
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Please explain step by step, thank you

Please explain step by step, thank you-example-1
User Vekerdyb
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Explanation:


x {}^(4) - 3x {}^(2) - 4 \\ = {x}^(4) - (4 - 1) {x}^(2) - 4 \\ = x {}^(4) - 4x {}^(2) + x {}^(2) + 4 \\ = {x}^(2)( {x}^(2) - 4) + 1( {x}^(2) - 4) \\ =( {x}^(2) - 4)( {x}^(2) + 1)

User Jnoreiga
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