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Unformatted text preview: MAC1140, Precalculus Algebra, Summer B 2007 Review Problems for Exam 2 1. Perform the operations and write the answer as a complex number in standard form. a) (5+ i )(2 3 i ) b) 2+5 i 2 7 i c) i 3 ( i 2 + i +1) d) i 2007 e) p (4 + 3 i )(3 i 4) f) (3 + i ) · i 2. True or False? a) The equation x 2 + 2 x + 3 = 0 has two complex solutions that are conjugate. b) √ 7 = √ 7 i c) √ 2 · √ 8 = p ( 2)( 8) d) 4 = 4 3. Solve a) x 2 + x + 3 = 0, b) 2 x 2 5 x 7 = 0, c) 3 x 2 + x 2 = 0. 4. Find the real solutions of the following equations. a) √ 5 x + 1 9 = 0 b) (4 x ) 2 / 5 4 = 0 c) √ x 2 8 = 2 x d) √ 3 x + 7 √ 2 x + 3 = 1 e) √ 5 x 2 + 3 x 5 = 2 x + 1 5. Find the real solutions of each equation: a) x 8 15 x 4 16 = 0 b) 2(3 x 1) 1 / 2 3(3 x 1) 1 / 4 + 1 = 0 c) ( y 2 9) 3 p y 2 9 4 = 0 d) ( 2 x +1 2 x 1 ) 2 3 ( 2 x +1 2 x 1 ) 2 = 0 e) 2 x 3 + 18 x = x 2 + 9 6. Find all real solutions of the following equations....
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This note was uploaded on 06/09/2011 for the course MAC 1140 taught by Professor Williamson during the Summer '08 term at University of Florida.
 Summer '08
 WILLIAMSON
 Calculus, Algebra

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