найди значение выражения 0.4×3целых1/8-(1/4)в квадрате. Created by joric2. matematika-ru

4)в квадрате...

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найди значение выражения 0.4×3целых1/8-(1/4)в квадрате

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koba80 0,4×3 1/8-(1/4)^2=1,1875
1)0,4= 2/5
2)3 1/8=25/8
3) (1/4)^2=1/16
4)2/5×25/8-=2×25/8×5=50/40=5/4
5)5/4-1/16=20/16-1/16=20-1/16=19/16=1 3/16=1,1875

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