Distributive postulate.
The expression 3x + 3 = 3(x + 1) is an example of a distributive postulate. It says that multiplying a number by a group of numbers added together is the same as doing each multiplication separately.
<span>x^2 = 81
x = </span>±√81
x = ±9<span>
x^2 = -9 no solutions
x^2 = 20
x = </span>±√20
x = <span>±2</span>√5<span>
</span>

<span>
</span>
Answer:
https://www.map.mathshell.org/download.php?fileid=1714
Step-by-step explanation:
Go to that website and it should tell you about everything
Answer:
Coordinates of the midpoint are (-5.5, 5)