
- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Simplify and express each of the following in exponential form:
(i). 23×34×43×32
(ii). [(52)3 ×54]÷57
(iii). (254÷53)
(iv). 3×72×11821×113
(v). 3734×33
(vi). 20+30+40
(viii). 20×30×40
(viii). (30+20)×50
(ix). 28×a543×a3
(x). (a5a3)×a8
(xi). 45×a8b345×a5b2
(xii). (23×2)2
Problem Statement
Simplify and express each of the following in exponential form:
(i). 23×34×43×32
(ii). [(52)3 ×54]÷57
(iii). (254÷53)
(iv). 3×72×11821×113
(v). 3734×33
(vi). 20+30+40
(viii). 20×30×40
(viii). (30+20)×50
(ix). 28×a543×a3
(x). (a5a3)×a8
(xi). 45×a8b345×a5b2
(xii). (23×2)2
Solution
Given:
(i). 23×34×43×32
(ii). [(52)3 ×54]÷57
(iii). (254÷53)
(iv). 3×72×11821×113
(v). 3734×33
(vi). 20+30+40
(vii). 20×30×40
(viii). (30+20)×50
(ix). 28×a543×a3
(x). (a5a3)×a8
(xi). 45×a8b345×a5b2
(xii). (23×2)2
To do: To simplify and express each of the above in exponential form.
Solution:
(i). 23×34×43×32
=23×34×223×25
=23+2×343×25 [∵ am×an=am+n]
=25×343×25
=25−5×34−1
=20×33 [am÷an=am−n]
=1×33 [∵a0=1]
=33
(ii). [(52)3 ×54]÷57
=(56×54)÷57 [(am)n=am×n]
=(56+4)÷57 [∵ am×an=am+n]
=510÷57
=510−7 [am÷an=am−n]
=53
(iii). (254÷53)
=(52)4÷53
=58÷53 [(am)n=am×n]
=58−3 [am÷an=am−n]
=55
(iv). 3×72×11821×113
=3×72×1183×7×113
=31−1×72−1×118−3 [am÷an=am−n]
=30×71×115
=7×115
(v). 3734×33
=3734+3 [∵ am×an=am+n]
=3737
=37−7 [am÷an=am−n]
=30
=1 [∵a0=1]
(vi). 20+30+40
=1+1+1 [∵a0=1]
=3
(vii). 20×30×40
=1×1×1 [∵a0=1]
=1
(viii). (30+20)×50
(1+1)×1 [a0=1]
=2×1
=2
(ix). 28×a543×a3
28×a5(22)3×a3
=28×a526×a3
=28−2×a5−3 [am÷an=am−n]
=22×a2
=(2a)2
(x). (a5a3)×a8
=(a5−3)×a8 [am÷an=am−n]
=(a2)×a8
=a2+8 [∵ am×an=am+n]
=a10
(xi). 45×a8b345×a5b2
=45−5×a8−5b3−2 [am÷an=am−n]
=40×a3×b1
=1×a3×b [a0=1]
=a3b
(xii). (23×2)2
=(23+1)2 [∵ am×an=am+n]
=(24)2
=24×2 [(am)n=am×n]
=28