Question

Multiply (2t – 3)^3.

A. 8t^3 – 27

B. 8t^3 – 12t^2 – 27

C. 8t^3 – 12t^2 + 6t – 27

D. 8t^3 – 36t^2 + 54t – 27

Answer 1

Do I use the difference of cubes?

Answer 2

use the identity
(a-b)^3 = a^3 - 3a^2 b + 3ab^2 - b^3

Answer 3

D

Answer 4

:D

Answer 5

Can you show how you got D? I can't seem to get that answer:(

Answer 6

If you don;t mind...

Answer 7

CUBING AN EXPRESSION IS THE SAME AS MULTIPLYING THE EXPRESSION 3 TIMES

(2t-3)(2t – 3)(2t – 3)

Answer 8

Ok let me try that way! Thanks

Answer 9

then multiply it with the use of the foil method

Answer 10

for the beginning is this correct \[4t ^{2} -12t + 9 (2t-3)\]

Answer 11

yes
then multiply it again with the use of foil method

Answer 12

Thanks a lot!!! I got D as the answer :D

Answer 13

no prob :)