Thursday
September 18, 2014

Homework Help: ALGEBRA

Posted by STUCK on Tuesday, December 11, 2007 at 11:00pm.

1, Factor each expression
x^2 - 10x - 24

A. (x + 4)(x - 6)
B. (x + 6)(x - 4)
C. (x + 2)(x - 12)
D. (x + 12)(x - 2)

2, x^2 - 36 = 0

A. (1 + square root of 3, 1 - square root of 3)
B. (-6,6)
C. No solution
D. None of these


3, Factor each expression
49 x^9 - 25 y^2

A. (7x^2 - 5y)(7x^2 + 5y)
B. (7x^3 - 5y)(7x + 5y)
C. (7x^2 - 5y)^2
D. None of these


4, Factor each expression
x^2 - 9

A. (x - 3)(x - 3)
B. (x - 9)(x + 1)
C. (x - 3)(x + 3)
D. None of these


5, Factor each expression
3 x^2 - 2x - 8

A. (3x + 2)(x + 4)
B. (2x + 4)(2x - 4)
C. (3x - 2)(x - 4)
D. None of these


6, 1 - 5 x^2 = -3x

A. (3/10 + square root 29/10, 3/10 - square root 29/10)
B. (-3/10 + square root 29/10, -3/10 - square root 29/10)
C. No solution
D. None of these


7, x^2 - 4x + 1 = 0

A. (2 + square root of 3, 2 - square root of 3)
B. (-2 + square root of 3, -2 - square root of 3)
C. No solution
D. None of these


8, Find each product
(x - 6y)^2

A. x^2 - 12xy + 36y^2
B. x^2 + 12xy + 36y^2
C. x^2 - 12xy - 36y^2
D. None of these


9, Find each product
(x - 4)(x + 4)

A. x^2 - 8x -16
B. x^2 - 16
C. x^2 + 2x + 16
D. None of these


10, Find each product
(3x - 2)(2x + 5)

A. 5x^2 - 11x - 10
B. 6x^2 - 11x -10
C. 6x^2 + 9x +10
D. None of these


11, The cube of a certain whole number is 48 more than the square of the same number. What is the number?

A. 3
B. 4
C. 5
D. 6


12, If a quadratic equation can be solved, how many solutions are there?

A. 1
B. 1 or 2
C. 2
D. 3


13, 3 x^2 - 2 = 4x

A. (-2,4)
B. (2/3 + square root of 10/3, 2/3 - square root of 10/3)
C. (-2/3 + square root of 10/3, -2/3 - square root of 10/3)
D. None of these


14, The product of two consecutive positive integers is 132. What are the numbers?

A. 10, 11
B. 11, 12
C. 12,13
D. 13,14


15, x^2 - 4x - 121 = -4x

A. (-10, 12)
B. (-9, 9)
C. (-11, 11)
D. None of these

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