A letter or symbol is used to represent an unknown quantity
D because its a triangle so it would be 3x but then you have to add the 4 for the longer side.
The answer is D the Balfour Declaration
Not as hard as you think.
Just multiply all the prime factors together.
3^2 + 4^2 = 5^2
9 + 16 = 25
25 = 25
5^2 + 12^2 = 13^2
25 + 144 = 169
169 = 169
9^2 + 12^2 = 15^2
81 + 144 = 225
225 = 225
<span>a^2 + b^2 is = to c^2</span>