1.
Solve 5
x
2
– 10
x
= 0.
A.
x
= 2
B.
x
= 0 or
x
= -2
C.
x
= 0
D.
x
= 0 or
x
= 2
Hint
2.
Solve
a
2
– 12
a
= -27.
A.
a
= 3 or
a
= 9
B.
a
= 3
C.
a
= -27 or
a
= -15
D.
a
= 9
Hint
3.
Backtrack to find the input for the flowchart.
A.
b
= 3
B.
b
= –3
C.
b
= –5
D.
b
= 5
Hint
4.
Give the approximate solutions of this equation.(2
z
– 3)
2
– 31 = 33
A.
z
= 2.5 and
z
= 5.5
B.
z
= –2.5 and
z
= –5.5
C.
z
= 2.5 and
z
= –5.5
D.
z
= –2.5 and
z
= 5.5
Hint
5.
Find the solutions of the equation.3(
x
+ 1)
2
– 4 = 23
A.
x
= 4 and
x
= –4
B.
x
= 2 and
x
= –2
C.
x
= 2 and
x
= –4
D.
x
= 4 and
x
= –2
Hint
6.
Find the solutions of the equation.(
x
– 2)
2
– 1 = 3
A.
x
= 0 and
x
= 4
B.
x
= 0 and
x
= –4
C.
x
= 4 and
x
= –4
D.
x
= –4 and
x
= –4
Hint
7.
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
8.
In the quadratic formula, what does
b
2
– 4
ac
tell you.
A.
the places where a quadratic equation crosses the
x
-axis
B.
the vertex of a quadratic equation
C.
the solution(s) in a quadratic equation
D.
the number of solutions in a quadratic equation
Hint