Question 1036665
.
What are the zeros of y=-4x^2-5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


<pre>
The zeros of y=-4x^2-5 are the roots of the quadratic equation


{{{-4x^2-5}}} = {{{0}}}.


They are the same as the roots of this quadratic equation


{{{4x^2 +5}}} = {{{0}}},   or  this  {{{x^2}}} = {{{-5/4}}}.


These equations have no real roots. 
They have complex roots. They are


{{{x[1]}}} = {{{i*(sqrt(5)/2)}}}  and   {{{x[1]}}} = {{{-i*(sqrt(5)/2)}}}.

Here  "i"  is an "imaginary" unit  i = {{{sqrt(-1)}}}.
</pre>