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1. $f (x, y) = x^{2} y^{2}$ ,

Answer: Option A

Explanation:

f (x, y) = x^{2} y^{2} এখানে, h (x) {=x}^{2} -5 \Rightarrow h (3) = 3^{2} - 5 \Rightarrow h (3) = 4 f (2, 4) = 2^{2} \times 4^{2} = 64

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