Algebra Demystified 2nd Ed

192 algebra De mystif ieD

algebra DeMYSTiFieD / gibilisco / 000-0 / Chapter 4

3. 68 225523
   48 12 25 10 15
   73 12 10 15

()−+=−()

− +=−

−=−

xx

xx

xx

−−−

−=−−

+

=−

73 73

12 63 15

15

363

xx

xx

x

+1 5

33

3

63

3

21

x

x

=−

=−

4. −−=+
   −+ =+
   −−
   −+ =
   ++

48 328

32 12 28

22

32 10 8

32 32

1

()xx

xx

xx

x

0040

10

10

40

40

4

x

x

x

=

=

=

5. 72 34 5813
   14 21 4208 83
   10 4

()xx()()x

xxx

x

−− += −+

−− −=−+

− 118 5

88

2415

41 41

236

2

2

36

2

18

=−

−−

−=−

++

=

=

=

x

xx

x

x

x

x