Solve 64x^3 +1 =0
the back of the texts books gives me the answers -1/4 and 1 plus or minus i√3 all over 8
i understand where the -1/4 comes from . i just don't understand the second answer. i know they used the quadratic formula to get it but i always end up with something to totally different

If m 17 27 90 63 ** picture is attached

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.