Question

solve this problem ​

Answer 1

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Answer 2

Step-by-step explanation:

$= (x - 3)( {x}^{3} + {3x}^{2} - 7x + 1)$

$= x( {x}^{3} + {3x}^{2} - 7x + 1) - 3( {x}^{3} + {3x}^{2} - 7 + 1)$

$= {x}^{4} + {3x}^{3} - {7x}^{2} + x - {3x}^{3} - {9x}^{2} + 21 - 3$

$= {x}^{4} - 16 {x}^{2} + x + 18$