If xxx and yyy are real numbers, the least possible value of the expression 4(x−2)2+4(y−3)2−2(x−3)24(x - 2)^{2} + 4(y - 3)^{2} - 2(x - 3)^{2}4(x−2)2+4(y−3)2−2(x−3)2 is :
- 8
- 4
- 2
0
2
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