6+2=42
4+9=48
8+2=72
3+7=27
1+4=??
Solve it?
Choose the correct choice.
A) 9
B) 3
C) 42
D) 4
E) 16
x+y=x[y+(x-1)]=x^2+xy-x   6+2=6[2+(6-1)]=36+12-6= 
<gadget id="calculator">36+12-6</gadget>
<output>42</output>
42   4+9=4[9+(4-1)]=16+36-4= 
<gadget id="calculator">16+36-4</gadget>
<output>48</output>
48   8+2=8[2+(8-1)]=64+16-8= 
<gadget id="calculator">64+16-8</gadget>
<output>72</output>
72   3+7=3[7+(3-1)]=9+21-3= 
<gadget id="calculator">9+21-3</gadget>
<output>27</output>
27   1+4=1[4+(4-1)]=1+4-1= 
<gadget id="calculator">1+4-1</gadget>
<output>4</output>
4   Answer :4
<result>D</result>
6+2=42
4+9=48
8+2=72
3+7=27
1+4=??
Solve it?