y=x^2+2x+1

Question

Needbsome help with this one. 

Answer 1

x² + 2x + 1 = (x + 1)(x + 1), which can easily be verified by FOIL

 

To solve, set equal to 0

 

x + 1 = 0

 

x = -1

 

This equation has a double root of x = -1