单项选择题

The expression (x+4)(2x-3) is equivalent to which of the following（）
Ⅰ、2x(x+4)-3(x+4)
Ⅱ、(x-4)(2x+3)
Ⅲ、 2x²-12

A. Ⅰ only
B. Ⅱ only
C. Ⅲ only
D. Ⅱ and Ⅲ only
E. Ⅰ，Ⅱ，and Ⅲ

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单项选择题

A. 9%
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D. 12%
E. 15%

单项选择题

A. 2^x+1
B. 2^x+2
C. 2^2x
D. 4^x
E. 4^2x

The expression (x+4)(2x-3) is equivalent to which of the following（） Ⅰ、2x(x+4)-3(x+4) Ⅱ、(x-4)(2x+3) Ⅲ、 2x2-12