👉 In mathematics, a "foiled" expression is an algebraic expression that results in an equation with no solution. In other words, if you substitute a specific value for one variable in the expression and then solve it, the result should be zero, but there is no value of the variable that makes this equation true. For example: ``` (2x + 3) / (x - 4) ``` If we set x = 5, the expression simplifies to:
