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Unformatted text preview: Name Class Date . 55 HWFQUFar F‘MI #1 - | Practice 54 1 fl QTENDING THE REAL— NUMBER SYSTEM 3 W: hm: chasm 41mm. my 4AM Me Fix/AL. 2* ' Due: __._.—-- h In problems 1—12, perform the indicated operations. ; 1 [3 +4-1)+[—5+7;} 2 (3+4i][3—4i} 1 ' . 1 _ _ | 2“ 1 3 (6—?1'1—[1—31’] ><f 3_____ .| ‘ . II] 5 (3 Hal-114 + 7;] s [a + 311—14 #91] 5 — ii". 5 7 (2- + 1511+ (—6 + 111'] 1 51. I T'I: 9 {4 ‘91][6 — 51') 1o [3 + 71‘) 4—3 + an 9 ' 1o , V73{ 12 (—3 + 151‘] +17 + 31'] 11 361.5 12 In problems 13—16. factor each expression overthe complex numbers. >4 1% - 13 14 ' 1% 1M4 15 ' ' 16 In problems 17—13. solve for x. 1‘! x3+x+4=0 1B xz—x~—8=O 17 1B In problems 19—20. write a quadratic equation with the given roots. 19 . 197421- 20W+ 51- 20% 178 Practice 54 Copyright (‘3 McDougal, Linen & company Name Class Date i POLYNOMIALS AND POLYNOMIAL Practice 57 . " FUNCTIONS _ Use after Section 9.2 In problems 1—1 0. use synthetic division to find each quotient and remainder. 1 (XS—2'x2+x—1]+[x— 1] 1 2 [x3—3x3+x+6]+[x+2_] ' 2 3 ('xs—xz+x—-1}+[x—3] 3 4 [2x3—4x2+x—4]+[x+2] , 4 5 [3x3+x2-—5X+1)+(x+3] 5 5 [x4—x3—x3+x~1]+[x—1] 6 9 {5x4+3x3~X2+x—12)+(x+1) 9 “Hi-imm- M W I a Sht‘P 55 .2 In problems 11-20. find all of the rational zeros of each function. 1'? § W 10 S K) :9 V\ 11% 11M 12 ftx1=2x3—Qx2—sx+5 12 M 1:45th . W 14 ”'3 'S 15 f[XJ=x3—2x2+4x—-21 15 ‘— 15 f[x]=x4—x3—4Xz—5x-—'3 ‘ 1s ' 17 fIX)=x‘—3x3—7xa+1ox+3 1? 1a f(x]=2x4+733—10X3+23x—10 13 W 19 WW ' 20 5‘" %l Copyright © McDougaI. Littall 8: Company Practice 5? 181 ...
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