Answer: 
Step-by-step explanation:
Since, given 
And we know that 
Therefore, 
⇒
Thus,
The answer to this question is B) difference of squares
In the given diagram, the value of x is 15
<h3>Circle Geometry </h3>
From the question, we are to determine the value of x
From one of the circle theorems, we have that
Opposite angles of a cyclic quadrilateral are supplementary.
Thus, in the diagram
5x + 7x = 180°
12x = 180°
x = 180°/12
x = 15
Hence, the value of x is 15
Learn more on Circle Geometry here: brainly.com/question/27884509
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Answer:
50
Step-by-step explanation:
5^3÷(13-8)×2
Using the BODMAS rule
Bracket first
13-8=5
5^3=125
Followed by division
125÷5=25
Then back to the multiplication
25×2=50
