function emc(){
a = Number(document.calculator.number1.value);
b = Number(document.calculator.number2.value);
c = a*a +2*a*b +b*b;
document.calculator.total.value = c;
}
form name="calculator"
Enter value of a
input name="number1" type="text"
Enter value of b :
input name="number2" type="text"
input name="total" type="text"
input onclick="javascript:emc();" type="button" value="Calculate"
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