(c - 3)(2c - 1) is the factored form
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Answer:
liter
Step-by-step explanation:
<h2>Hello!</h2>
The answers are:
C) 
D) 
F) 
<h2>Why?</h2>
To know which of the products results in a difference of square, we need to remember the difference of squares from:
The difference of squares form is:

So, discarding each of the given options in order to find which products result in a difference of squares, we have:
<h2>
A)</h2>

So, the obtained expression is not a difference of squares.
<h2>
B)</h2>

So, the obtained expression is not a difference of squares.
<h2>C)</h2>

So, the obtained expression is a difference of squares since it matches with the form of the difference of squares.
<h2>D)</h2>

So, the obtained expression is a difference of squares since it matches with the form of the difference of squares.
<h2>E)</h2>

So, the obtained expression is not a difference of squares
<h2>F)</h2>

So, the obtained expression is a difference of squares since it matches with the form of the difference of squares.
Hence, the products that result in a difference of squares are:
C) 
D) 
F) 
Have a nice day!
Answer:
246 cm^2
Step-by-step explanation:
Area of the rest of cardboard = Area of square - Area of the 4 sectors
Kindly note that at each corner of the cardboard, the angle is 90 degrees
Area of square = L^2 = 20^2 = 400 cm^2
Area of a sector = theta/360 * pi * r^2
Since we have 4 sectors;
Area of sectors =4 * 90/360 * 22/7 * 7 * 7
= 22/7 * 49 = 22 * 7 = 154 cm^2
Area of the remaining part of cardboard = 400 cm^2 - 154 cm^2 = 246 cm^2