When a=5, what is the operation result of a**2+2a
当a=5时，a**2+2a的运算结果是多少
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">25 + 10</gadget>
<output>35</output>

<result>35</result>