k) 5/8 * 4,2 - (1/4) do potęgi 2 =
l) 4/7 * (0,2 + 1/4) =
5/8*4,2-[1/4]^=0,625*4,2-[0,25]^=2,5-0,0625=2,43754/7*[0,2+1/4]=0,57*[0,2+0,25]=0,57*0,45=0,2565
k) 5/8 *4,2 -(1/4)^2 =
5/8 *42/10 -1/16 =
1/4 * 21/2 -1/16 =
21/8 - 1/16 =
42/16 - 1/16 = 41/16 = 2i 9/16
4/7 * (2/10 + 1/4) =
4/7 *( 4/20 + 5/20)=
4/7 *( 9/20) = 36/140 = 9/35
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5/8*4,2-[1/4]^=0,625*4,2-[0,25]^=2,5-0,0625=2,4375
4/7*[0,2+1/4]=0,57*[0,2+0,25]=0,57*0,45=0,2565
k) 5/8 *4,2 -(1/4)^2 =
5/8 *42/10 -1/16 =
1/4 * 21/2 -1/16 =
21/8 - 1/16 =
42/16 - 1/16 = 41/16 = 2i 9/16
l) 4/7 * (0,2 + 1/4) =
4/7 * (2/10 + 1/4) =
4/7 *( 4/20 + 5/20)=
4/7 *( 9/20) = 36/140 = 9/35