Question

Answer 1

1) = 59 + [25-2\(^2\)]
    = 59 \(+\left[25-4\right]\)
    = 59 + 21 = 80
2) = 20 + [ 125 - 3\(^3\)]
    = 20 + [125 - 27 ]
    = 20 + 98 = 118
3) 15.[87-(5-1)\(^2\)]
    = 15. [ 87 - 4\(^2\)]
    = 15. 71 = 1065

Answer 2

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Answer 3

4) = 674 - [ 7 + \(3^3\)]
    = 674 - [ 7 + 27 ]
    = 674 - 34 = 640
5 )= [ 21 - 1^12 .8]-9
    = [ 21 - 1.8 ] -9
    =  13 - 9 = 4
6) =[ 5\(^2\).2-8]+48
   = [25.2-8]+48
   = [50 -8 ] +48
   = 42 + 48 =90

Answer 4

1 ,80

2,118

3,1065