for which value of n, 4^85+2^3373+4^n will be the perfect square ??  Choose the correct option.
A) 1878	B) 1978	C) 1578	D) 2578	E) 3287
given expression is in the form of a^2+2ab+b^2   4^85=2^2(85)   4^n=2^2n   2^3373=2*2^85*2^n   3373=85+1+n   n=3373-86= 
<gadget id="calculator">3373-86</gadget>
<output>3_287</output>
3287   ANSW3287R:3287
<result>E</result>
for which value of n, 4^85+2^3373+4^n will be the perfect square ??