Question

Simplify the sum.

(7u3 + 8u2 + 7) + (8u3 – 3u + 7)

a. 15u3 + 8u2 – 3u + 14

b. 14 – 3u + 8u2 + 15 u3

c. –1u3 + 8u2 – 3u + 14

d. –1u3 – 3u2 + 8u – 14

Answer 1

combine like terms

Answer 2

Yes, combine like term. You don't need the parenthesis, so it would become:

Answer 3

(7u3 + 8u2 + 7) + (8u3 – 3u + 7)
7u3 + 8u2 + 7 +8u3 – 3u + 7
7u3 +8u3 + 8u2 – 3u+ 7 +7
15u3 + 8u2 – 3u + 14