Question

нужно найти сумму многочленов ​

Answer 1

$2)(2x + y - z) + (x + 2y - 2z) = 3x + 3y - 3z$

$1)(3a + 2b - c) + (a + b - 2c) = 4a + 3b - 3c$

$3)(12 {x}^{2} - {y}^{3} + x) + (x + {y}^{3} - 10 {x}^{2} ) = 2 {x}^{2} + 2x$

$4) (15 {m}^{3} + {n}^{2} - m) + (2m - {n}^{2} - 5 {m}^{3} ) = 10 {m}^{3} + m$