What is the exponent of the last term of: $$(2x^2+3y^3)^{10}$$
Hi! I'm sorry if this question seems a bit amateurish. I'm quite confused with this question that was asked in a quiz about binomial expansion.
My teacher said that the answer is 30. However, isn't 30 the exponent of y and not the exponent of the whole last term? The b term would be: $$3y^3$$ and so the last term would be $$(3y^3)^{10}=3^{10}y^{30}$$
Isn't the answer suppose to be 10 since the exponent of: $$3y^3$$ is 10.