Question

1)решите 14mn²-7n пожалуйста
2)a⁴+a³
3)y(2a+3b)-y(3a-b) подробно

Answer 1

$14m {n}^{2} - 7n = 7n(2mn - 1) \\ {a}^{4} + {a}^{3} = {a}^{3} (a + 1) \\ y(2a + 3b) - y(3a -b ) = 2ay + 3by - 3ay + by = - ay + 4by$