For two large and small squares, it is known that the difference between their side lengths is 12 centimeters, and the difference in area is 984 square centimeters. What is the sum of their areas in square centimetres?
大、小两个正方形，巳知它们的边长之差为12厘米，面积之差为984平方厘米．那么它们的面积之和为多少平方厘米．
<gadget id="calculator">47 * 47</gadget>
<output>2_209</output>

<gadget id="calculator">35 * 35</gadget>
<output>1_225</output>

<gadget id="calculator">2_209 + 1_225</gadget>
<output>3_434</output>

<result>3_434</result>