Odpowiedzi

2009-10-29T19:07:09+01:00
4/5-2(- 4 -1)+2[-5(4/5+1)-o,5*4/5]+2*- 4 = 4/5 +8+1+2((-4-5)-4/10)-8 = 4/5 +8+1+2(-4-5)-4/10-8 =
4/5 +8+1-8-5-4/10-8 = - 11,6
1 5 1
2009-10-29T19:11:35+01:00
4/5-2(-4-1)+2[-5(4/5-1)-0,5*4/5]+2*-4=4/5-2(-5)+2[9-2/5]-8=
=4/5+10+2*(-8 3/5)-8=4/5+10+(17 1/5)-8= 20
2009-10-29T19:23:13+01:00
=⁴/₅ -2(-4-1)+2[-5(⁴/₅ +1)-0,5- ₄/⁵ ]+2-4=
=⁴/₅ -2(-4-1)+2[-²°/₅ +5-0,5- ⁴/₅ ]+2-4=
=⁴/₅ +6+2-⁴°/₅ +10-1-⁸/₅ +2-4=
= - ⁴⁴/₅ + 15 =
=-⁴⁴/₅ + ⁷⁵/₅ =
=³¹/₅=
=6²/₅