1.
Use the quadratic formula to solve
x
2
+ 2
x
- 8 = 0.
A.
-2
B.
-4, -2
C.
-4, 2
D.
-4
Hint
2.
Solve
a
2
-
a
- 20 = 0 by completing the square.
A.
-5, 4
B.
C.
D.
-4, 5
Hint
3.
Solve 2
z
2
+
z
- 4 = 0 by completing the square.
A.
B.
-2, 1
C.
D.
Hint
4.
Backtrack to find the input for the flowchart.
A.
t
= 1
B.
t
= 3
C.
t
= 4
D.
t
= 2
Hint
5.
Solve the equation by backtracking.
A.
y
=
B.
y
=
C.
y
= 3
D.
y
= 1
Hint
6.
Find the solutions of the equation.4
y
2
– 16 = 0
A.
y
= 2 and
y
= –2
B.
y
= –2 and
y
= –2
C.
y
=
and
y
=
D.
y
=
and
y
=
Hint
7.
Rewrite the expression as a product of two binomials.
x
2
–
x
– 56
A.
(
x
+ 7)(
x
– 8)
B.
(
x
– 7)(
x
– 8)
C.
(
x
– 7)(
x
+ 8)
D.
(
x
+ 7)(
x
+ 8)
Hint
8.
Solve the equation.6
x
2
– 12
x
+ 3 = 0
A.
x
= 0.29 and
x
= –1.71
B.
x
= 0.29 and
x
= 1.71
C.
x
= –0.29 and
x
= –1.71
D.
x
= –0.29 and
x
= 1.71
Hint