Question

$(0.5 - {x}^{2} )(0.5 + {x}^{2} )$
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Answer 1

$\bf (0.5 - {x}^{2} )(0.5 + {x}^{2} ) \\\bf 0.5 ^{2} - (x ^{2} ) ^{2} \\\bf 0.25 - (x ^{2} ) ^{2} \\\bf \red { 0.25 - {x}^{4} }$