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111E3-F09 - MA 11100 1 Exam 3A Fall 2009 Which product(s...

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MA 11100 Exam 3A Fall 2009 1 1) Which product(s) is(are) correct? ( ) ( ) 2 2 2 2 2 2 4 3 3 3 I (2 5)(3 8) 6 40 II III (2 3) 4 12 9 x x x x x x x x x x + - = - - - + = - + = + + A I only B I, II, and III C I and II only D I and III only E II and III only 2) Which is a factor of 2 2 6 3 x x ax a + + + ? 3 2 2 3 2 A x B x a C x D x a E x a - + + - + 3) Which trinomial is prime (cannot be factored)? 2 2 2 2 2 2 5 6 2 3 5 50 5 6 4 2 1 A x xy y B y y C n n D a a E x x + + - - + - - - + + 4) Factor the following polynomial completely. 4 2 27 12 x x - 2 2 2 2 2 3 (3 2) 3 (3 2)(3 2) 3 (3 4)(3 1) 3 (9 1)( 4) None of the above. A x x B x x x C x x x D x x x E - + - + - + -
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MA 11100 Exam 3A Fall 2009 2 5) Select the perfect square trinomial. 2 2 2 2 2 16 4 9 40 16 10 25 4 13 9 None are perfect square trinomials. A b b B x x C g gh h D u u E + + + + - + + + 6) Solve the following equation. Which choice describes the solution(s)? ( 4)( 2) 8 y y + - = - A There are two positive solutions. B There are two negative solutions. C One solution is zero, the other is positive. D One solution is zero, the other is negative.
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