Question

x^4-y^4+ x^2-y^2 answer my question
​

Answer 1

Answer:

$( {x}^{4} - {x}^{4}) + {x}^{2} - ( {x}^{2} ) \\ 0 + 0 = 0 \\ hope \: it \: helps \\ \\ please \: mark \: as \: brainlist$