Math Algebra 7.2.3.1

16. (2x)(2x) + 2x. Which of the following is equivalent to the equation above?
A. 4x2 + 2x
B. 6x
C. 6x2
D. 2x2 + 2x
17. xy(x) + x2 (y) + (x)(y)(x). Simplify the equation above.
A. 2x2y
B. 3x2y
C. 4xy + x2y
D. 2xy + x2y
18. y = (2x2) 2x. In the equation above, if x = 2, what is the value of y ?
A. 16
B. 32
C. 64
D. 128
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