SOLUTION: 8a^3+c^3= i really dont knowhow to do this

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Question 562107: 8a^3+c^3=
i really dont knowhow to do this
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
8a^3+c^3=2^3a^3+c^3
=(2a)^3+c^3
use following sum of cubes formula to solve:
x^3+y^3=(x+y)(x^2-xy+y^2)
For given problem:
x=2a
y=c
You can take it from here to solve.