Question

2 i 1/4 + (7 i 1/2 - 3 i 4/5)

b)( 6 -2 i 1/3)+8 i 1/2 - 5 i 3/4

c) 10 i 1/2 - (4 i 1/3 + 2 i 1/5 + 1 i 3/10

d) (8 i 3/4 + 5 i 1/2) - (9 i 1/5 - 6 i 7/8)

DAM NAJ HELP!!!;d

Answer 1

2 i 1/4 + (7 i 1/2 - 3 i 4/5) =2i1/4+(7i5/10-3i8/10)=2i1/4+3i7/10=2i5/20+3i14/20=5i19/20

b   (3i2/3+8i1/2-5i3/4=3i4/6+8i3/6-5i3/4=12i1/6-5i3/4=12i4/24-5i12/24=6i14/24

Sory ale więcej nie dam rady może chociarz troszke pomogłem. :)

Answer 2

a)2 i 1/4 + (7 i 1/2 - 3 i 4/5)=2 5/20+(7 10/20-3 16/20)=2 5/20+(6 30/20-3 16/20)=

  = 2 5/20+3 14/20=5 19/20

b)( 6 -2 i 1/3)+8 i 1/2 - 5 i 3/4=3 2/3+8 6/12-5 9/12=3 8/12+8 6/12-5 9/12=

    =11 14/12-5 9/12=6 5/12

c) 10 i 1/2 - (4 i 1/3 + 2 i 1/5 + 1 i 3/10 =10 1/2-(4 10/30+2 6/30+1 9/30=

=10 15/30 -7 25/30=9 45/30-7 25/30=2 20/30=2 2/3

d) (8 i 3/4 + 5 i 1/2) - (9 i 1/5 - 6 i 7/8)=(8 3/4+5 2/4)-(9 8/40-6 35/40)=

   = 13 5/4-(8 48/40-6 35/40)=4 1/4-2 13/40=4 10/40-2 13/40= 3 50/40-2 13/40=

   =1 37/40