By Julie King, Peter Rasmussen
Too many scholars finish their learn of arithmetic ahead of ever taking an algebra direction. Others try and learn algebra, yet are unprepared and can't sustain. Key to Algebra used to be built with the assumption that any one can study easy algebra if the topic is gifted in a pleasant, non-threatening demeanour and a person is obtainable to aid whilst wanted. a few academics locate that their scholars profit by way of operating via those books ahead of enrolling in a standard algebra course--thus drastically bettering their possibilities of good fortune. Others use Key to Algebra because the simple textual content for an individualized algebra path, whereas nonetheless others use it as a complement to their usual hardbound textual content. permit scholars to paintings at their very own speed. the major to Algebra books are casual and self-directing. e-book 6 covers Multiplying and Dividing Rational Expressions.Format: PaperbackPublisher: Key Curriculum Press
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Additional resources for Key to Algebra Book 6 Multiplying and Dividing Rational Expressions
30 Inc. Herearetwo examples: the firstintegerby the reciprocal f l 2 = 4= 3 f-tBr2 -f = L-ts+ . So whenwe divide multiplying the firstfractionby the reciprocal fractionswe firsthaveto rewritethe problem: sign. Thedivisionsigngetschangedto a multiplication by its reciprocal. Andthe secondfractiongetsreplaced Thenwe multiply to getthe answer. it to multiplication. Do eachdivisionproblemby changing g - 5 = g . (+I 3a ab ? 2 B*3= + 1 _ 3 x 3 5 * 1 ! ( + 35 l 5 2 3x 5 xz 5 l +b = = d+2 = T- x*6 + x+2 x-2 x -6 O1990by Kay CutriculumProjecl,Inc.
Divideeachexpression -1 t t - 1 x 8 ffi _ form. Besureyouransweris in simplest by ;}. eachexpression 5. Multiply g x2-4 t2-4 ffi T T T x2+4 x2+4x r+2 4x-2 41 Y' x ' x x2+3x 2Y T f f i 7. Copyandcompleteeachstatement. Multip|yingov}givesthesameanSWerasdividingby-. by-' Dividing by 4 givesthe sameansweras multiplying anotherway. in problem7 to writeeachof theseexpressions 8. Usethe statements lp'-z) + + lazgz g. Thenusethe Distributive as a multiplication P r i n C i p l et O m U l t i p l y . Explain.
R-il = lo0x 0199O by Key CurriculumProjocl, Inc Do not duplicalo without pormission. Whenwe multiply alwaysget 1. ' . l - . 8 - l g l r " " - ? ir the reciprocdof f, J' * 1 l 1 3 + ' - 54 = r| l + l is the reciprocat ot $:' = I q = r*l l r I Doyouseea ruleforfindinga reciprocal? Findthe reciprocal of eachfraction. tu 2 Fraction l 3x r-4 3 Reciprocal Complete eachsentence below. 3is , so the reciprocal 5xy = of 5ry is , so the reciprocal of xz- 4 , so the reciprocal writethe number To findthe reciprocal of a number, as a fractionandtheninvertit (turnit upsidedown).