I need help with Problem numbers 73, 77, 81, 85, 87PLEASE EXPLAIN EACH STEP CLEARLY

C In Problems 73-80, is the limit expression a 0/0 indeterminate form? Find the limit or explain why the limit does not exist. ( x + 2) ( x - 4) x - 2 73. lim 74. lim (x - 1) (x - 4) x--3x +3 x - 5 75. lim ( x + 1 ) ( x - 3) rlx - 1 76. lim (x - 3) (x - 4) x2 - 49 x2 - 7x + 10 77. lim 78. lim x-7 x- - 4x - 21 2 - 4x - 5 x- + 3x + 2 x2 + 2x + 1 79. lim 80. lim * *- 1x2 - 3x + 2 x *2 x2 - 2x + 1 Compute the following limit for each function in Problems 81-88. /(2 + h) - 1(2) lim 81. f(x) = 3x + 1 82. f(x) = 5x - 1 83. S(x) = x + 1 84. f(x) = 1 - 2 85. f(x) = -7x + 9 86. f(x) = -4x + 13 87. f(x) = x + 1 88. /(x) = -3/x1 89. Let / be defined by I + my if. =1 (( x) - if x >