Algebra Demystified 2nd Ed

(Marvins-Underground-K-12) #1

376 alGEbra De mystif ieD


4.^21
1


3
2

87

(^22)
x
x
x
x
x
xx





  • = −−
    −−


5.^41
1


5
1

x 24
x

x
xx

+

+ −

=

6.^2
1


32
2

x
xx+ xx

+=
+

7.^2
21


334
3

x
xx

x
+ x

−=−−

8.^2
5


1
3

8
xx− 31 x 5

+=−
+

9.^1
4


2
1

3
3

3
xxx^234

x
− xx

+
+


+

= −
−−

10.^4
1


3
1

1
2

6
xx− xx^21

+
+

=−

✔SOLUTIONS


1.^3
4


3
2
32 43
312 2

x
x

x

xx x
xxx


=−

=−−
=− +

()()()
6
++−+−
−=
−=
=−=

=

312312
360
32
30 20
0
3

22
2

xxxx
xx
xx
xx

x

() 0

++

==

22

xx 02    
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