Matematyka z Plusem kl. 5 ( zad.4/89)
b) 4*3 1/8 - ( 2 1/2) do potęgi 2=
c) 1 1/8 * ( 4 3/5 - 2 7/10) + ( 1/2) do potęgi 2 =
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b) 4*3 1/8 - ( 2 1/2) do potęgi 2= 4* 25/8 - (5/2)^2 = 12,5- 6,25=6,25
c) 1 1/8 * ( 4 3/5 - 2 7/10) + ( 1/2) do potęgi 2 = 9/8* (4 6/10 - 2 7/10) + 1/4= 9/8* 19/10+1/4= 2 11/80 + 1/4= 2 11/80 + 20/80 = 2 31/80
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b) 4*3 1/8 - ( 2 1/2) do potęgi 2= 4*25/8 - (5/2)^2= 100/8 - 25/4 = 50/4 - 25/4 = 25/4 = 6 1/4
c) 1 1/8 * ( 4 3/5 - 2 7/10) + ( 1/2) do potęgi 2 = 9/8 * (23/5 - 27/10) + 1/4 = 9/8 * (46/10 - 27/10) + 1/4= 9/8 * 19/10 + 1/4 = 171/80 + 1/4 = 171/80 + 20/80 = 191/80 = 2 31/80