For the algebraic expression, identify the terms and indicate whether they are like or unlike.7x2y - 2x2y
A. 7x2y and 2x2y; like
B. 7x2y and 2x2y; unlike
C. 7x2y and -2x2y; like
D. 7x2y and -2x2y; unlike
Answer: C
Mathematics
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over the rectangular cube 
A. 
B. 
C. 
D. 
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A. 
B. 
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= A if A is negative.
Fill in the blank(s) with the appropriate word(s).
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A. -
= -5
B. 
; cannot be simplified
C. 
= 12.5
D. 
= 
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