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Q. (1) Solve 2 2(2) 4(5 1)  .

 
2 2
2 2
Suppose (2) 4(5 1)
(2) 4(6)
4 4 36
4 144
140
140
y
y
y
  
 
 
 
 
 
Q. (2) Solve 23+2(9 4 ) .
2Suppose 3+2(9 4 )
3 2(9 16)
3 2( 7)
3 14
11
11
y
y
y
 
  
  
 
 
 
Q. (3) Solve 23( 4)+( 5) 

 
2Suppose 3( 4)+( 5)
3( 4)+ 5 5
3( 4)+25
12 25
13
13
y
y
y
  
  ...