Question 74

$$xy = x + y + xy, x \oplus y = x^2 + y^2$$, then $$\mid 3 (4 \oplus 5) -(3 * 4)\oplus 5 \mid = ?$$

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$$x*y = x + y + xy, x \oplus y = x^2 + y^2$$, then $$\mid 3 * (4 \oplus 5) -(3 * 4)\oplus 5 \mid = ?$$