Please specify, are we multiplying, adding, dividing or subtracting? Or am I supposed to transform these into number form?
we know that
A quadratic equation is a polynomial with an order of two. Its general form is

case a) 

<u>The case a) is a quadratic equation</u>
case b) 
<u>The case b) is a grade
polynomial</u>
case c) 
<u>The case c) is a grade
polynomial</u>
case d) 
<u>The case d) is a grade
polynomial</u>
therefore
the answer is

Hi there!
I calculated your equation on MathPapa Algebra calculator(you can find the link here:https://www.mathpapa.com/algebra-calculator.html) and I got the answer D. -24 - 57i
Oh god statistics was not my jam. Mean distribution and standard deviation oh god.
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