Answer:
First Box: Factor by difference of squares
Second Box: It has all perfect squares
Third Box: see my work
Step-by-step explanation:
We have the equation 
Before we do anything, let us bring all of the terms to the left side

Now that we have moved the terms to one side, it is clear that we have a difference of squares.
-Work-

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Answer:
x=25
Step-by-step explanation:
25*25=625 therefore x= 25
Answer:
X intercept is -1
Y intercept is 4
Step-by-step explanation:
The intercepts are when the line goes through the x axis or when
the line goes through the y axis.
Answer:
B. Equilateral, and C. Acute.
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
If the dot product of the vectors is zero then they are perpendicular
(5, - 1) • (- 3, 6)
= (5 × - 3) + (- 1 × 6) = - 15 + (- 6) = - 15 - 6 = - 21 ≠ 0
Since product is not zero vectors are not perpendicular