Chapter 7 linear equaTionS 219
- 2316
2316
x
xbefore
−+=
−+= Isolatethesquareroot ssquaringbothsides.
−−
−=
− =
−
11
235
235
2
(^22)
x
x
x 3325
33
228
28
2
14
++
=
x
x
x
- 72 3
72 3
72 9
77
22
2
2
1
(^22)
−=
[]− =
−=
−−
−=
−
=−
x x x x x x
- 34 25
34 25
3425
22
45
4
22
xx
xx
xx
xx
x
+= +
[]+ =+[]
+= +
−−
+=
−− 44
x= 1