Which expressions are equivalent to q+p+q+p+q?

Choose all answers that apply:

(Choice A)
A
2p + 3q

(Choice B)
B
2(p+q) + q

(Choice C)
C
None of the above

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1