(5+3i) , মূল (root) বিশিষ্ট দ্বিঘাত সমীকরণ (quadratic equation ) টি-হবে -

A          x2-10x +34 =0
B  x2-5x-34=0
C   x2+5x-34=0
D  x2+5x+34=0 

Correct Answer:          x2-10x +34 =0

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