Algebra Demystified 2nd Ed

(Marvins-Underground-K-12) #1

168 algebra De mystif ieD


9.^252
12


xx^2
x

−+

=


  1. xy
    xy


22
44



=

✔SOLUTIONS


1.^1624
812


823
423

(^322)
43
2
3
xx
xx
xx
xx x


= −

()=
()



  1. xx
    xx


xx
xx

x
x

2
2

28
712

42
43

2
3

+−
++

= +−
++

= −
+

()()
()()


  1. xx
    xx


xx
xx

x
x

2
2

76
45

16
15

6
5

−+
+−

= −−
−+

= −
+

()()
()()

4.^2512
26


23 4
23 3

4
2

2
2

xx
xx

xx
xx

x
x

−−
−−

= +−
+−

= −

()()
()()

5.^372
61


31 2
3121

2
21

2
2

xx
xx

xx
xx

x
x

−+
+−

= −−
−+

= −
+

()()
()()

6.^264
3336


232
312

32
32

2
2

xxx
xxx

xx x
xx x

++
+−

= ++
+−

()
()
=^21 xx x
xx x

()()
()(

++
+−

2
343 ))

()()
()()

= ++
+−

212
343

xx
xx


  1. 42840
    6636


4710
6

32
32 22 2

xy xy xy^2
xy xy xy

++ xyxx
−−

= ()++
xxy^22 ()xx−− 6
= ++
+−

= +

425
623

25

(^233)
xyxx
xy xx
x
yx
()()
()()
()
()



  1. x
    x


x
xx

x
xx x



= −
−+

= −−
−+

= −
+

4
16

4
44

4
44

1

(^2) ()() 4
()
()()



  1. 252
    12


212
12

212
21

xx^2
x

xx
x

xx
x

−+

= −−

= −−
−−

()()()()
()

== −

=− −

x

x

2
1
() 2


  1. xy
    xy


xy
xyxy xy

22
44

22
2222 22

− 1

= −
−+

=
()()+
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