Question

Tarea
P(x) = 2a-b+3c
q(x) = 5a-2b+7c
r(x) = -a-b-c
Resolver
1) q-r-p

Answer 1

Respuesta:

q - r - p = 4a + 5c

Explicación paso a paso:

5a - 2b + 7c - (- a - b - c) - (2a - b + 3c) =

= 5a - 2b + 7c + a + b + c - 2a + b - 3c=

= 4a + 5c

Answer 2

$=(5 a - 2b + 7c) - ( - a - b - c) - ( 2a - b + 3c) \\ \\ = 5a - 2b + 7c + a + b + c - 2a + b - 3c \\ \\ = (5a + a - 2a) +( - 2b + b + b) + (7c + c - 3c) \\ \\ = (4a) + (0b) + (5c) \\ \\ = 4a + 5c$