Evaluate. Each of the following can be integrated using the rules developed in this section, but some algebra may be required beforehand. 66. (5t + 4)2 dt 68. [(5t 4)² Ja-ovidi ⑦x1 - 6x² - 7 dx √x²-6x² 70 72. 2. S 74. 76. 78. 1 dx In 10 x Vi 67. S (x - 1)²x²³ dx 69. √ (t + 3)² dt 71. f(t + 1)³ dt 73. [beax dx (3x-5)(2x + 1) dx 75.64x dx - x+1 dx cos x tan x dx Sco 13+8 77. 1+2 dt

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