Question

Find the sum of the given polynomials.

Answer 1

Sum = ax + by + c + 2ax - 3by + c + by - c
Adding and cancelling the like terms
Sum = 3 ax - by + c

a. 3ax - by + c

Answer 2

Answer:

$3ax-by+c$

a is the correct option.

Step-by-step explanation:

We have to find the sum of the polynomials ax + by + c, 2ax - 3by + c, and by - c .

Writing these polynomial in sum form

$ax+by+c+2ax-3by+c+by-c$

Group the like terms, we get

$(ax+2ax)+(by-3by+by)+(c+c-c)$

Combine the like terms, we get

$3ax-by+c$

a is the correct option.