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1 Simplify: а -За х 2 е -5а x (-3) i 2аx(-За)

1 Simplify: а -За х 2 е -5а x (-3) i 2аx(-За)

Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Solution a 3- (6 – 5x) =3 – 6 + 5x b 2x - (8- 10х) -D 2х - 8 + = -3 + 5x = 12x – 8 c 3(-2x+5)+4(3x + 6) = -6x + 15 + 12x + 24 =-6x+ 12x + 15 + 24 = 6x + 39 d -4(-2x+5) – 6(4 – 2x) = 8x – 20 – 24 + 12x = 8x + 12x – 20 – 24 = 20x – 44 Exercise 11A 1 Simplify: Example 1 а -За x 2 b -6b x (-5) с -(-бт) d 2x(-3а) е -5а x (-3b) f -(-5h) g -7x(-3a) h -mx3 i 2аx(-За) j -4x x (-3x) k -За X 5а Example 2 2 Expand the brackets in each case. а 3(х + 2) b 5(2x + 3) c 6(6x+ 3) d -5(4x + 7) е 7(5а -6) f -4(5+2b) g 7(3z+5) h 6(2a – b) і -11(6а — 5) j -7(6 – x) k -6(-3х — 4) 1-5(2а — 3b) o -7(-7m – 3) m -3(-6т + 5) n -3(-m+ 8) р-4(2-Зc) (2x-9) Example 3ab 3 Expand the brackets and collect like terms in each case. a 3(2x – 5) + 5x ь 6(х - 3) + 10 с 4(2х - 3) — 5 d 6(x– 7) + 6x е -4(п -6) + 4n f 7(2m – 5) + 8 42 ICE-EM MATHEMATICS YEAR 8 BOOK 2 ISBN: 978-1-107-64841-8 Photocopying is restricted under law and this material must not be transferred to another party. O The University of Melbourne / AMSI 2011 g -4(8k +7) + 60k h 7(-8m – 3) + 5m
Transcribed Image Text:Solution a 3- (6 – 5x) =3 – 6 + 5x b 2x - (8- 10х) -D 2х - 8 + = -3 + 5x = 12x – 8 c 3(-2x+5)+4(3x + 6) = -6x + 15 + 12x + 24 =-6x+ 12x + 15 + 24 = 6x + 39 d -4(-2x+5) – 6(4 – 2x) = 8x – 20 – 24 + 12x = 8x + 12x – 20 – 24 = 20x – 44 Exercise 11A 1 Simplify: Example 1 а -За x 2 b -6b x (-5) с -(-бт) d 2x(-3а) е -5а x (-3b) f -(-5h) g -7x(-3a) h -mx3 i 2аx(-За) j -4x x (-3x) k -За X 5а Example 2 2 Expand the brackets in each case. а 3(х + 2) b 5(2x + 3) c 6(6x+ 3) d -5(4x + 7) е 7(5а -6) f -4(5+2b) g 7(3z+5) h 6(2a – b) і -11(6а — 5) j -7(6 – x) k -6(-3х — 4) 1-5(2а — 3b) o -7(-7m – 3) m -3(-6т + 5) n -3(-m+ 8) р-4(2-Зc) (2x-9) Example 3ab 3 Expand the brackets and collect like terms in each case. a 3(2x – 5) + 5x ь 6(х - 3) + 10 с 4(2х - 3) — 5 d 6(x– 7) + 6x е -4(п -6) + 4n f 7(2m – 5) + 8 42 ICE-EM MATHEMATICS YEAR 8 BOOK 2 ISBN: 978-1-107-64841-8 Photocopying is restricted under law and this material must not be transferred to another party. O The University of Melbourne / AMSI 2011 g -4(8k +7) + 60k h 7(-8m – 3) + 5m
Exercise 11A 1 Simplify: а -За x 2 е -5а х (-3b) i 2ax (-За) 2 Expand the brack а 3(х + 2) d -5(4x+ 7) g 7(3z+5) ј -7(6 — х) m -3(-6т + 5) р -4(2 — Зс)
Transcribed Image Text:Exercise 11A 1 Simplify: а -За x 2 е -5а х (-3b) i 2ax (-За) 2 Expand the brack а 3(х + 2) d -5(4x+ 7) g 7(3z+5) ј -7(6 — х) m -3(-6т + 5) р -4(2 — Зс)
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