If A^2 + B^2 = 25 and AB = 10, what is the value of the expression (A - B)^2 + (A + B)^2?  Pick:
A) 10
B) 20
C) 30
D) 50
E) 70
(a-b)^2 = a^2 + b^2 - 2ab = 25-20= 
<gadget id="calculator">25-20</gadget>
<output>5</output>
5   (a+b)^2= a^2 + b^2 + 2ab = 25+20= 
<gadget id="calculator">25+20</gadget>
<output>45</output>
45   so (a+b)^2 + (a-b)^2= 45 + 5= 
<gadget id="calculator">45 + 5</gadget>
<output>50</output>
50   50
<result>D</result>
If A^2 + B^2 = 25 and AB = 10, what is the value of the expression (A - B)^2 + (A + B)^2?