Question

x^3 + 64 = 0.
find the imaginary number by factoring??

Answer 1

-4 is not an imaginary number so that cannot be the answer.

Answer 2

Factor x^3+64

Answer 3

I'll get you started:
\[x^3+64=(x+4)(x^2 \]

Answer 4

\[a^3+b^3=\left( a+b \right)\left( a^2-ab+b^2 \right)\]

Answer 5

Now you finish the factoring.

Answer 6

im a bit confused where you got x^3 + 64?? @Mertsj

Answer 7

oh wow i needed to look at the problem im an idiot aha

Answer 8

That is the problem you posted.

Answer 9

You must have studied factoring and specifically the factoring of the sum of two cubes. Use that knowledge to factor x^3+64

Answer 10

i must have i just do not remember. math is just very difficult for me

Answer 11

Ok. Watch this: