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Mari15678
a fost răspuns

Calculati
a=(1,1^2+1,2^2-1,3^2)÷4+6÷10^2 ; b=(26÷2,6-1,8÷03) ÷ (21,19-0,3-0,89)

Răspuns :

a =[ (11/10)² +12/10)²-13/10)² ] :4+6 :100

   =(121/100 + 144/100 + 169/100) :4 + 6 :100

   = 434/100 :4 +6 :100

   = 434/100 x 1/4 + 6/100

    = 434/400 + 6/100

    = 434/400 + 24/400

   = 458 / 400


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