Question

розкладіть на множники:

8x³-y³

a²-2ab+b²-25

Answer 1

$8x {}^{3} - {y}^{3} = (2x - y)(4 {x}^{2} + 2xy + {y}^{2} ) \\ \\ {a }^{2} - 2ab + {b}^{2} - 25 = (a - b) {}^{2} - 25 = (a - b - 5)(a - b + 5)$