Known: a+10=b+9=c+8, then what is the value of the formula (ba)**2+(cb)**2+(ca)**2.
已知：a+10=b+9=c+8，则式子(b-a)**2+(c-b)**2+(c-a)**2的值是多少．
<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">1 + 1 + 4</gadget>
<output>6</output>

<result>6</result>