Question

What is the value of the expression –3x^3 when x = –3?



A.
–81


B.
–27


C.
27


D.
81

Answer 1

@kym02

Answer 2

Did you work it out?

Answer 3

i tried to @kym02 i think its C but im not quite sure

Answer 4

Alright i'll go it through with you.
\[-3x^{3}\]
Hence,
\[x=-3\]
so,
\[(-3) \times (-3) \times (-3) = -27\]
so basically it now becomes:
\[-3(-27)\]
which is equal to:
\[81\]
Therefore, the answer is D :)
you had it! just needed to keep trying! :D

Answer 5

thank you!

Answer 6

you're welcome!