ICSE Class 9 Answered
1-{1-(1-x2)-1}-1
Asked by Tariq Usmani | 12 Nov, 2011, 08:21: PM
Expert Answer
1-{1-(1-x2)-1}-1
Whenever you need to simplify any thing, follow the order of the brackets as
( , { , [. It means first solve the quantity in the bracket ( then inside the bracket {
and finally in the last bracket [.
So, inside (), we have 1-x2 , so open this bracket first to get
1-{1-1+x2-1}-1
Now see inside the { }, we have 1-1-1+x2
which becomes
= 1-{x2-1}-1
=1-x2+1-1
=1-x2
This is the answer
Answered by | 12 Nov, 2011, 08:28: PM
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