In the expansion of (3a + 4b)^8, which of the following are possible variable terms? Explain your reasoning.
a^2b^3; a^5b^3; ab^8; b^8; a^4b^4; a^8; ab^7; a^6b^5

EXPANSION FOR (3a+4b)^8 IS

6561a^8+69984a^7b+326592a^6b^2+870912a^5b^3+1451520a^4b^4+1548288a^3b^5+1032192a^2b^6+393216ab^7+65536b^8

Question

In the expansion of (3a + 4b)^8, which of the following are possible variable terms? Explain your reasoning.
a^2b^3; a^5b^3; ab^8; b^8; a^4b^4; a^8; ab^7; a^6b^5

EXPANSION FOR (3a+4b)^8 IS

6561a^8+69984a^7b+326592a^6b^2+870912a^5b^3+1451520a^4b^4+1548288a^3b^5+1032192a^2b^6+393216ab^7+65536b^8

anonymous · Answer

my guess is that i just say that a^5b^3 is apossible variable term because in the expanded version there is a part which goes870912a^5b^3