Question

simplify the following( a² - b² )( a² + b²) -( a² - b²)² ​

Answer 1

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

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

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

${(a + b)}^{2} (a - b)(1 - a + b)$

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