Question

What is the fourth term of (d – 4b)^3? (1 point)

b3
–b^3
64b^3
–64b^3

Answer 1

(a-b)^3 = a^3 - 3a^2 b + 3 a b^2 - b^3

Answer 2

i dont understand how im goin to use that to get an answer. im so lost with this question.

Answer 3

U know binomial theorem, do you ?

Answer 4

kind of but after i have (a-b)^3 = a^3 - 3a^2 b + 3 a b^2 - b^3 what do i do next?

Answer 5

Here, what do u see as the fourth term ..

-b^3 .. right?

Answer 6

yes.