Question

Разложить на множетeли
a^9 - b^3

(b+8)²-4b²

Answer 1

$({a}^{3} ) {}^{3} - {b}^{3} = ( {a}^{3} - b) \times \\ ( ({a}^{3} ) {}^{2} + {a}^{3} b + {b}^{2} ) = \\ ( {a}^{3} - b)( {a}^{6} + {a}^{3} b + {b}^{2} )$

${b}^{2} + 16b + 64 - {4b}^{2} = \\ - 3 {b}^{2} + 16b + 64$