Math, asked by shahedibu2007, 13 days ago

Pls answer this with working on the paper

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Answered by bagkakali
1

Answer:

26. x+1/x=15

x^2+1/x^2

=(x+1/x)^2-2.x.1/x

=(15)^2-2

=225-2

=223

27. square root of 2491

2491| 49

16

89 | 891

801

90

90 students will be left

number of row=49

number if column=49

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