Review 8.6
Solve for x and check for extraneous solutions.
1.
x=6
2.
x = 3 and –2
3.
18x
6
3
−
= 2
3
x + 8 x + 2 x − 2x + 4
5
x = and 2
2
Perform the operation and then simplify. Do not use your calculator.
4. a.
2 1
+
3 5
13
15
−
5.
x=
−x 3 − 3x 2 − x − 51
( x + 5) ( x − 5) ( x + 3)
6.
x=
−x +1
( x + 7) ( x − 2)
1 2
−
2 3
b.
1
6