Question

(x4 -81) by (x + 3)​

Answer 1

Answer : (x4 -81) : (x + 3)

x4 -81) : (x + 3) x4 divided by x3 = x^(4-3) = x¹= x .

Final answer → x

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Answer 2

$( {x}^{2} + 9)(x - 3)$

Step-by-step method : -

$\frac{ {x}^{4} - 81}{x + 3}$

$= \frac{ { {(x}^{2}) }^{2} - {9}^{2} }{x + 3} \\ = \frac{( {x }^{2} + 9)( {x}^{2} - 9) }{x + 3} \\ = \frac{( {x}^{2} + 9)( {x}^{2} - {3}^{2} ) }{x + 3} \\ = \frac{( {x}^{2} + 9)(x + 3)(x - 3)}{x + 3} \\ = ( {x}^{2} + 9)(x - 3)$