Hello! And thank you for your question!
First we are going to redo the equation:
y^3−3y^2(3)+3(y)×3^2−3^3=0
Then we are going to use Cube of Difference:
0 = (y - 3)^3
That take cube root of both sides:
0 = y - 3
Finally add 3 to both sides:
3 = y
Final Answer:
y = 3
