So a^3 + b^3 = (a + b)(a^2 - ab + b^2).
Substituting in, we have 812 = 14(a^2 - ab + b^2).
Simplifying we have 58 = a^2 - ab + b^2.
a^2 - ab + b^2 = (a + b)(a + b) - 3ab.
Substituting in, we have 58 = (14)(14) - 3ab.
Now we have ab = 46.
Then we also have a^2 - ab + b^2 = (a - b)(a - b) + ab.
Thus, 58 = (a - b)^2 + 46.
(a - b)^2 = 12.
a−b=±2√3
Now we can sove for a. If we add the two equations together, we get 2a = 14 + 2sqrt(3)
Thus, a=7+√3, and a=7−√3.
Substituting in, we have b=7−√3, and b=7−3√3.
Thus, our possible for solutions (a,b)are:
(7+√3,7−√3)
(7−√3,7−3√3)
