Evaluate - 3
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Evaluate.
1) b2 - 4ac ; b = -3, a = 3, c = 5
1)
2) 8x2 + 9y ; x = 3, y = 5
2)
3) xy + yz ; x = -3, y = 4, z = 5.
3)
4) -4x2 + 3x + 4 ; x = -2
4)
5) 4xy - x3 ; x = -4, y = 5
5)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Find the value of the expression. If necessary, round the result to the nearest hundredth.
6) 5x + 9y
when x = 2.8 and y = -3.4
8.2
A)
B) -16.6
C) 42.2
D) 44.6
7)
x-y
8x
6)
when x = 2.5 and y = -3.6
A) 0.31
7)
B) -0.3
C) -0.05
D) 0.06
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Evaluate the expression for the given replacement values.
x = 3, y = 3
8) (x + 2y)2
8)
9)
3x
+ y3
y
x = 9, y = 4
9)
10)
y
+ 2x2
z
x = 5, y = 16, z = 4
10)
Evaluate the expression.
when x = -2, y = 3, z = -4
11) -x2 - 2z
12) 5(x + 9) + 13
11)
when x = -19
12)
1
Answer Key
Testname: EVALUATE 1
1)
2)
3)
4)
5)
6)
7)
8)
-51
117
32
-18
-16
B
A
81
283
9)
4
10) 54
11) 4
12) -37
2