I would say 2 because it says he calculated his 2- score.
Answer:
What is 2x + 5 (y-1) when x=8 and y=5
Step-by-step explanation:
CAN SOMEONE HELP PLS
Given: Different equations
To Determine: Which would be best solved using difference of two squares
Solution
The factorization of a difference of two squares is given below

Let us examine each of the given equation




From the above,

The two equation above can be solved by difference of two square, but the equation below is the easiest solved using differnce of two square
x² - 25 = 0
2(4x+5)>7x+20 perform indicated multiplication on left side
8x+10>7x+20 subtract 7x from both sides
x+10>20 subtract 10 from both sides
x>10
or in interval notation, x=(10, +oo)