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Correct Answer: 100

We have x+y-7=0

x + y = 7 …(i)

and 3x + y – 13 = 0

= 3x + y = 13 …(ii)

B subtracting Eq. (i)from Eq. (ii), we get

3x + y = 13 …(i)

x + y = 7 …(iI)

2x = 6

Therefore, x = 3

On putting the value of x in q. (i), we get

3 + y = 7

Therefore, y = 4

Now,

4×2+y2+4xy

4×(3)2+(4)2+4×3×4

4×9+16+48

36+16+48=100