Question

if x=-3,then x³+27=_______​

Answer 1

Step-by-step explanation:

x³+27= (-3)³+27

-27+27=0

Answer 2

Answer:

We can take the cube root of both sides, which is the same as raising both sides to the

1

3

power. Thus, we have:

x

=

3

√

−

27

which evaluates to

x

=

−

3

(the number in the radical is negative, and we have an odd-numbered root, so our answer must be negative).

If you can solve

x

3

=

27

, you can easily find

x

3

=

−

27

, because the only thing that'll change is the sign of the answer. It will become negative.

Hope this helps!