Answer:
6.3
Explanation:
Substituting b=6.3, we have:
49 - (b² + 3) = 49 - (6.3² + 3)
= 49 - (39.69 + 3)
= 49 - 42.69
= 6.31
Therefore, 49 - (b² + 3) is approximately 6.31 if b is equal to 6.3.
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