How many and what type of solutions does the quadratic equation x^2+81=0 have?

two real solutions
two imaginary solutions
one real solution
one imaginary solution

For this case we have the following quadratic equation:

We look for the solutions:

We subtract 81 from both sides of the equation:

We apply square root on both sides to eliminate the exponent:

We have to:

So:

Two imaginary solutions

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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