Chapter 7 linear equaTionS 219

10. 2316

2316

x

xbefore

−+=

−+= Isolatethesquareroot ssquaringbothsides.

−−

−=

 −  =

−

11

235

235

2

(^22)
x
x
x 3325
33
228
28
2
14

++

=

x
x
x

11. 72 3

72 3

72 9

77

22

2

2

1

(^22)
−=
[]− =
−=
−−
−=

−
=−
x x x x x x

12. 34 25

34 25

3425

22

45

4

22

xx

xx

xx

xx

x

+= +

[]+ =+[]

+= +

−−

+=

−− 44

x= 1