algebra
posted by jossie .
Add. (2a^42a^3+3a^2+14a5)+(a^5+7a^3+7a^23a+2)+(5a^4+a^28a6)

Add all terms with the same exponent of a, and add all constants. You get
a^5 3a^4 + 5a^3 + ... 9
Fill in the a^2 and a terms. You need the practice.