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# 1Math 50 : Elementary Algebra - page 11 / 15

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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.

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

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

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.   .

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