Question

Expand the following using the Binomial Theorem and Pascal’s triangle.

(x + 2)^6

(x – 4)^4

(2x + 3)^5

(2x – 3y)^4

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

Answer 1

thank you so much! @amoodarya

Answer 2

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


note
sum of power must be =8
for example :a^2b^3 is not because 2+3=5 not 8

Answer 3

Okay that makes sense. Thank you