Question

Пожалуйста помогите срочно!!!

Answer 1

Решение:

$1)5x - 7xy + 4xy = 5x - (7 - 4)xy = 5x - 3xy$

$2)2xy - 7xy + 6 {y}^{2} = - 5xy + 6 {y}^{2}$

$3)2 {x}^{4} - {x}^{4} + 4 {x}^{2} - 3x + 4x = 3 {x}^{4} + 4 {x}^{2} + x$

$4)2ax + 3ax - {x}^{2} + 2 {x}^{2} - {y}^{2} = 5ax + {x}^{2} - {y}^{2}$

$5)4mn - 2mn - {n}^{2} + {m}^{2} = 2mn - {n}^{2} + {m}^{2}$

$6)8px + {p}^{2} + 4 {p}^{2} - {x}^{2} = 8px + 5 {p}^{2} - {x}^{2}$