4ac\), which comes from the quadratic formula and we can use this to find ... 4ac\textless0\) - there are no real roots (diagram 1) \({b^2} - 4ac = 0\) - the roots are real and equal ie one ...

169\textgreater0\) therefore roots are real and unequal. To solve the quadratic equation, we make \(y = 0\) and since the question already gave us the quadratic in its factorised form, we will use ...

Mathematicians once turned up their noses at imaginary numbers. But complex analysis actually simplifies math and physics.