Xsquared plus 4x plus 3

Answer 1

x2 +4x+3 is a polynomial that can be factored. It is the same as (x+1)(x+3). If we want to solve x2 +4x+3=0, then the factored form tells us x=-1 and x=-3 are the solutions. This is because if you have AB=0 and A and B are numbers or algebraic expressions, either A or B or both are 0. So x+1=0 implies x=-1.