George was solving the equation $\left(2x − 1\right)\left(x + 3\right) = 4$ and he got the solutions $x =\frac { 1 } { 2 }$ and $x = −3$. Jeffrey came along and said, “You made a big mistake! You set each factor equal to zero, but it's not equal to zero, it's equal to $4$. So you have to set each factor equal to 4 and then solve.” Who is correct? Show George and Jeffrey how to solve this equation. To be sure that you are correct, check your solutions.