Question

(a2-b2)(a2+b2)-(a2-b2)2
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Answer 1

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ANSWER

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=>

$( {a}^{2} - {b}^{2} )( {a}^{2} + {b}^{2} ) -{ ( {a}^{2} - {b}^{2}) }^{2}$

=>

${( {a}^{2} - {b}^{2} ) }^{2} - {( {a}^{2} - {b}^{2} ) }^{2}$

=>

$0$

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HOPE YOU GOT IT

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Answer 2

(a²-b²)(a²+b²)-(a²-b²)²

=(a^4-b^4)-(a^4+b^4-2a²b²)

=a^4-b^4-a^4-b^4+2a²b²

=-2b^4+2a²b²