If a quadratic equation can be factorised, the factors can be used to find the roots of the equation. The equation factorises to give \((x + 3) (x - 2) = 0 \) so the solutions to the equation \(x ...

If a quadratic equation can be factorised, the factors can be used to find the roots of the equation. The equation factorises to give \((x + 3) (x - 2) = 0 \) so the solutions to the equation \(x ...

Maybe your high school teacher didn’t want to deal with the issue of what happens when (b 2 - 4ac) – the expression under the square root in the quadratic formula – is negative. They might have ...

However, if you are willing to believe in the existence of square roots of negative numbers, you will get solutions to a whole new set of quadratic equations. In fact, a whole amazing and useful ...

Maybe your high school teacher didn’t want to deal with the issue of what happens when (b 2 - 4ac) – the expression under the square root in the quadratic formula – is negative. They might ...