It is not possible to find the square root of a negative number ... The graph of the quadratic equation \(y = ax^2 + bx + c\) crosses the \(y\)-axis at the point \((0, c)\).

Maybe your high school teacher didn’t want to deal with the issue of what happens when (b 2 - 4ac) – the expression under the ...

It is not possible to find the square root of a negative number ... The graph of the quadratic equation \(y = ax^2 + bx + c\) crosses the y-axis at the point \((0, c)\). The x-coordinate of ...

Everyone learns (and some readers maybe still remember) the quadratic ... square root is about 1.866. The roots, then, are 1.5625±1.866. Working that out, we get -0.30 and 3.4285. The negative ...