Question

Find the sum of: 5ab + bc - 3ca, ab - bc + ca and -ab + 2ca + ba

I'm confused with "-ab + 2ca + ba". When I add it on, can I do this: ...ca + - (ab + 2ca + ba)?

Answer 1

Not for a sum.

Answer 2

Can you show me what it would look like? And when would I do that then?

Answer 3

Adding polynomials is like adding real numbers, This question is asking for a sum, so add each term of the polynomial.

Answer 4

When would we use the method I used?

Answer 5

I will show you that after you add: 5ab + bc - 3ca, ab - bc + ca and -ab + 2ca + ba

Answer 6

5ab + bc