ESSENTIAL SKILL 1
Evaluate Expressions
Evaluate Expressions
What is the value of the expression 3a + 5b when a=-6 and b=2?
-8
Multiply: (3x3) (5x8)
5x11
Find the value of x:
4x + 2 =30
x = 7
What is a zero of an expression?
The value that makes the expression equal to zero.
For which values is the expression undefined?
(3x+5)/(x^2-9)
x= 3 and x = -3
What is the value of the expression 5x2 + 3x - 17 when x=-4?
51
Simplify: (2a4)3 (6a2)
48a14
If the expression 3x+8 is equal to 20 for some value of x, then what is the expression 3x - 5 equal to for the same value of x?
7
In the expression (x - 2)(3x+1), why must 2 be a zero?
Which expression represents the associative property?
1: 3x + 4 = 4 + 3x
2: 3(x + 6) = 3x + 18
3: 4(3x) = (4*3)x
3
Evaluate the expression below for x =2
(2x^2 +3x+6)/(8-3x)
10
Find the product of (2x+3) and (x-5)
2x2 - 7x - 15
Algebraically, determine the point of intersection of the two lines whose equations are shown below:
y = -4x + 5 and y = -6x - 3
(-4, 21)
x=-4 and y=21
What are the zeros of the expression below?
(x - 5)(x + 2)
x = 5 and x = -2
What value of m will make this equation an identity?
(xm)(x5)=x9
m=4
Evaluate the expression below for t=5
-4sqrt(2t+15)
-20
Express (x+4)2 as an equivalent trinomial
x2+8x+16
Solve the equation for x:
3(2x+5) = 2(x-6)-1
x=-7
Which of the following values of x is a solution to the equation below (and therefore must be a zero).
2x3 - 16x2 - 86x +220 = 0
Choose from: -2, 18, 10, -5
-5
How many solutions are there to the equation below?
3(2x + 4) = 6x + 12
Infinite
What is the value of the expression below when p=-3 ?
abs(p+1)-sqrt(p^2+7
-2
Write the product in standard form:
(x-3)(2x2+4x-10)
2x3 - 2x2 - 22x +30
Find the value of x that makes the equation true:
8(2x - 2) - 8 = 4(x + 9) - 12
x=4
The expression below has three integer zeros on the interval -10 to 10.
x3 + 3x2 - 16x - 30
x = 4, x = -2, x = -5
How many solutions are there to the equation below?
5(4p + 2) = 10(2p + 3)
No solutions