Unit Test #30

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

Simplify 3x - 4y - (4x - 7y) A. x - 11y
B. 3y - x
C. 3x - y
D. -x - 3y

Answer 1:

 

 

Q2:

 

(5x + 2y) - (2x - 5y) = A. 3x + 3y
B. 3x - 3y
C. 3x - 7y
D. 3x + 7y

Answer 2:

 

 

Q3:

 

Expand (2x + 1)(3x + 2) A. 5x2 + 7x + 3
B. 6x2 + 5x + 2
C. 5x2 + 7x + 2
D. 6x2 + 7x + 2

Answer 3:

 

 

Q4:

 

Expand (x + 3)(x - 7) A. x2 - 10x + 21
B. x- 10x - 21
C. x- 4x + 21
D. x- 4x - 21

Answer 4:

 

 

Q5:

 

(3x - 4y)= A. 9x2-12xy +16y2
B. 9x- 16y2
C. 9x2+16y2
D. 9x2-24xy +16y2

Answer 5:

 

 

Q6:

 

(3x + 2y)(3x - 2y) = A. 9x2+6xy - 4y2
B. 9x2 - 4y2
C. 9x2- 6xy -4y2
D. 9x2+ 4y2

Answer 6:

 

 

Q7:

 

(y - 4)(y + 4) = A. y2 + 16
B. y2 - 16
C. y2 + 8y + 16 
D. y2 + 8y - 16

Answer 7:

 

 

Q8:

 

An expression of the form
x2+ 2ax + a2 is best called
A. a perfect square
B. a cubic
C. difference of two squares
D. an expression

Answer 8:

 

 

Q9:

 

An expression of the form
x2- y2 is best called
 
A.a perfect square
B.difference of two squares
C. a cubic
D. an expression

Answer 9:

 

 

Q10:

 

abc(abc + abc) = A. 2abc
B. 3a2b2c2
C. 2a2b2c2
D. 2a4b4c4

Answer 10: