Quadratic Formula Application - Determine the Width of a Border

This video explains how to determine the width of a border of a quilt with a known area using the quadratic formula.

[mhayzyvalenzuela]

THANK YOU SO MUCH YOU JUST SAVED ME GOD BLESS YOU !!!

[itskiff]

ill be the first to say it! great video helped so much.

[yuhhh]

if you add 18 on the left side you also add 18 on the right side. so the right side must be 22+18=40.

[alster]

Factoring is quicker than quadratic formula.

The quadratic equation is factorable

[stevenscottoddballz]

I need help finding the right practice exercises. [John bought 100 feet of fencing. What is the largest area he can make if his house is one side and the fencing makes the other 3 sides?] #1.} X(100 - X) #2.} 100X - X² #3.} Negative 2X² + 100X ---- #4.} Applying the Axis of Symmetry, -B/2A, makes X = 50ft. Now I plug Known X into -X² + 100X to get Known Y, which is 2500 <Now we have the area.> The Vertex is (50, 2500), which means two sides of the fence are 50 Next, I apply Known X into 100-X, which will give the remaining side, which is 50 feet. So the area is 50ft*50ft] What are these types of problems called?