1. Add. (3c2 – 6c – 1) + (5c2 + 12c + 4)

a. 8c2 – 6c + 3
b. 8c2 + 6c + 3
c. 8c2 – 6c – 3
d. 8c2 + 6c – 3

2. Subtract. (2f2 + 5f – 9) – (6f2 + 5)

a. –4f2 – 4
b. –4f2 + 5f – 4
c. –4f2 – 14
d. –4f2 + 5f – 14

Question

1. Add. (3c2 – 6c – 1) + (5c2 + 12c + 4)

a. 8c2 – 6c + 3
b. 8c2 + 6c + 3
c. 8c2 – 6c – 3
d. 8c2 + 6c – 3 


2.  Subtract. (2f2 + 5f – 9) – (6f2 + 5)

a. –4f2 – 4
b. –4f2 + 5f – 4
c. –4f2 – 14
d. –4f2 + 5f – 14

anonymous · Answer

3c2 - 6c - 1 + 5c2 + 12c + 4
3c2 + 5c2 = 8c2
-6c + 12 = 6c
-1 + 4 = 3

8c2 + 6c + 3

jiteshmeghwal9 · Answer

first open the brackets as
$$\LARGE{3c^2-6c-1+5c^2+12c+4}$$now try to combine the like terms

anonymous · Answer

am i correct ^ ?

jiteshmeghwal9 · Answer

yes ! u r correct :)
Great :)

anonymous · Answer

2f2 + 5f – 9 – 6f2 + 5
2f2 - 6f2 = -4f2
+ 5f
-9 - 5 = -14

@jiteshmeghwal9 how about this one -4f2 + 5f - 14

hartnn · Answer

-9+5=-4,everything else is correct.

anonymous · Answer

okay thank you very much

hartnn · Answer

welcome :)