Find the sum or difference.
-$$\left( 2 a ^ { 4 } + 6 a ^ { 3 } \right) + \left( 6 a ^ { 4 } + 8 a ^ { 3 } \right)$$
A) $8 a ^ { 8 } + 14 a ^6$
B) $22 \mathrm { a } ^ { 7 }$
C) $22 a ^{14}$
D) $8 a ^ { 4 } + 14 a ^ { 3 }$

Question

Quizplus · Accepted Answer

When adding polynomials, you combine like terms. Here, $2a^4 + 6a^4 = 8a^4$ and $6a^3 + 8a^3 = 14a^3$, resulting in $8a^4 + 14a^3$.

Find the Sum or Difference (2a4+6a3)+(6a4+8a3)\left( 2 a ^ { 4 } + 6 a ^ { 3 } \right) + \left( 6 a ^ { 4 } + 8 a ^ { 3 } \right)(2a4+6a3)+(6a4+8a3)

Find the Sum or Difference $\left( 2 a ^ { 4 } + 6 a ^ { 3 } \right) + \left( 6 a ^ { 4 } + 8 a ^ { 3 } \right)$