Question

efectuati a) 12^34:12^32-3^1×3^2+2^2= b)2^3×3^2+25^0×11^2-4^0 = c) 1+{2+[3×(4×5)-6+7×8]-9}=

Answer 1

a) 12^2-3^3+4=144-27+4=121

b) 8x9+1x121-1=72+121-1=192

c) 1+{2+[3x20-6+56]-9}= 1+{2+[60-6+56]-9}= 1+{2+110-9}= 1+103=104

Answer 2

a)

12³⁴ : 12³² - 3¹ x 3² + 2² = 121

= 12 ⁽ ³⁴ ⁻ ³² ⁾ - 3³ + 4 =

= 12² - 27 + 4 =

= 144 - 27 + 4 =

= 117 + 4 =

= 121

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b)

2³ x 3² + 25⁰ x 11² - 4⁰ = 192

= 8 x 9 + 1 x 121 - 1 =

= 72 + 121 - 1 =

= 193 - 1 =

= 192

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c)

1 + { 2 + [ 3 x ( 4 x 5 ) - 6 + 7 x 8 ] - 9 } = 104

= 1 + [ 2 + ( 3 x 20  - 6 + 56 ) - 9 ] =

= 1 + [ 2 + ( 60 + 50 ) - 9 ] =

= 1 + ( 2 + 110 - 9 )  =

= 1 + ( 112 - 9 ) =

= 1 + 103 =

= 104