59. Factor .

60. Factor .

61. Factor .

62. Factor .

63. The base of a triangle is (2x+6) ft. and the height is (x-8) ft. Find the area of the

triangle in terms of the variable x.

64. Factor by grouping.

[Show your work, don’t just give the answer.]

65. Solve for x, .

66. Solve for a, .

67. Solve for y, .

68. Solve for y, .

69. The sum of the squares of two consecutive positive integers is sixty one.

Find the two integers. [Set up the equation, find the solution, and present the

answer.]

70. Find all integers k such that can be factored over the integers.

71. Write the number 2,3700,000 in scientific notation.

72. Write 0.0000000196 in scientific notation.

73. Use the formula , where h is the height in feet an object will

attain(neglecting air resistance) in t seconds and v is the initial velocity in feet per

second. A golf ball is thrown onto a cement surface and rebounds straight up. The

initial velocity of the rebound is 96 ft/sec. How many seconds later will the golf ball

return to the ground?

74. Subtract.

75. What polynomial must be added to

so that the sum is ?

76. Simplify.

77. Find if [Solve the equation first.]

78. Simplify. .