Final answer:
When the binary operator ∇ is defined as always producing the result 4, both expressions (4 ∇ 3) ∇ 6 and (7 ∇ 2) ∇ 5 simplify to 4, regardless of the numbers involved in the operations.
Step-by-step explanation:
The binary operator ∧ is defined such that for any numbers a and b, the result of a ∧ b is always 4. Using this definition, we simplify the given expressions, starting with the operations inside the parentheses first, as instructed by the order of operations (PEMDAS/BODMAS).
The expression (4 ∧ 3) ∧ 6 simplifies to 4 ∧ 6 because 4 ∧ 3 equals 4. Then, using the definition of the binary operator again, 4 ∧ 6 equals 4.
The expression (7 ∧ 2) ∧ 5 simplifies to 4 ∧ 5 because 7 ∧ 2 equals 4. Again, 4 ∧ 5 equals 4 based on the definition of the binary operator ∧.
Therefore, both expressions simplify to the number 4. There is no need to consider the numerical values within the operators because the result is predefined as 4 regardless of the numbers.