Question

(2c2 + 3c + 9) + (5c2 – 10c – 7)

Answer 1

add the terms with same variable of the same power, so
(2c^2 + 3c + 9) + (5c^2 – 10c – 7)
= 2c^2 + 5c^2 +3c -10c + 9 – 7
= can you try first?

Answer 2

7c^2+3c-10c+9-7
7c+9-7
2
7c^2+7c+2

Answer 3

First term and last term-> correct
Second term -> incorrect

Answer 4

7c^2-7c+2

Answer 5

Correct :)

Answer 6

oka thanks : )

Answer 7

welcome :)