Question

${x}^{4} - {x}^{4}$
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Answer 1

0 is the Answer anytime or Edit the question

Answer 2

$<font color = "red"><marquee ><U> Here is ur answer...</font color = "red"></marquee>$

$= > {x}^{4} - {x}^{4}$

$= > 0$

Hope it helps...