Question

памагите па алгибри срочна!!!!!!!!!!!!!!!!!!!

Answer 1

$\frac{ {a}^{4} {b}^{3} - {a}^{3} {b}^{4} }{(a - b) {}^{2} + ab } \times ( \frac{1}{ {a}^{3} } + \frac{1}{ {b}^{3} }) = \frac{ {a}^{3} {b}^{3} (a - b)}{ {a}^{2} - 2ab + {b}^{2} + ab } \times \frac{ {a}^{3} + {b}^{3} }{ {a}^{3} {b}^{3} } = \frac{ {a}^{3} {b}^{3} (a - b)}{ {a}^{2} - ab + {b}^{2} } \times \frac{(a + b)( {a}^{2} - ab + {b}^{2} )}{ {a}^{3} {b}^{3} } = (a + b)(a - b) = {a}^{2} - {b}^{2}$