To factor the cubic equation y=2x^3 +2, we first need to factor out the common factor of 2:
y = 2(x^3 + 1)
Now, we can see that the expression inside the parentheses is a sum of cubes, which can be factored using the formula a^3 + b^3 = (a + b)(a^2 - ab + b^2):
y = 2(x + 1)(x^2 - x + 1)
Therefore, the factored form of the cubic equation y=2x^3 +2 is y = 2(x + 1)(x^2 - x + 1).