(a + 2b)3 = a3 + 6a2b + __________

Use the Binomial Theorem to complete the binomial expansion.

Type your answer as the remainder of the binomial expansion using ^ in front of exponents, like this: 14a^2 + 3b

Use the ^ key for exponents; example: 25x^2y+3y^2

Question

(a + 2b)3 = a3 + 6a2b + __________


Use the Binomial Theorem to complete the binomial expansion.


Type your answer as the remainder of the binomial expansion using ^ in front of exponents, like this: 14a^2 + 3b


Use the ^ key for exponents; example: 25x^2y+3y^2

ghosting · Answer

Another that is confusing me: (3x + 5)3 = 27x3 + 135x2 + __________


Use the Binomial Theorem complete the binomial expansion.


Type your answer as just the remaining part of the binomial expansion. Use ^ before any exponents, like this: 23x^2 + 14x + 5