Calculate the exact value of each definite integral in Exer- cises 47-52 by using properties of definite integrals and the formulas in Theorem 4.13. 47. (x² + 1) dx 48. (Зх + 2) dx 49. (9 + 10х — х?) dx 50. (x+ 1)² dx 15 | (2x – 3)? + 5) dx (3(1 – 21)? + 4x) dx 51. 52. 0.

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