Answer:
8
Step-by-step explanation:
all numbers must be positive when you have the lines on the side
Since both terms are perfect squares, factor using the difference of squares formula, a
^2
−
b^
2
=
(
a
+
b
)
(
a
−
b
) where a
=
a
^2 and b
=
4
.
(
a
^2
+
4
)
(
a
+
2
)
(
a
−
2
)
The steps in the patterns A and B form a sequence
The attached diagram represents dots in patterns A and B
<h3>How to draw the diagrams</h3>
For pattern A, we have:
Step 2 = 10 dots
Increment of 3 dots in each step
This means that:
Step 0 = 4 dots
Step 1 = 7 dots
Step 2 = 10 dots
Step 3 = 13 dots
For pattern A, we have the following rule

When n = 0 to 3, we have:

Step 0 = 1 dot

Step 1 = 3 dots

Step 2 = 9 dots

Step 3 = 19 dots
Next, we draw the diagrams of both patterns (see attachment)
Read more about patterns at:
brainly.com/question/15590116
20,000 cm!!!!!!!!!
hope i helped!!!!!!!