
英语数学
2.Whichofthefollowingexpressionsrepresentstheproductof3lessthattwicexand2morethantheq...
2. Which of the following expressions represents the product of 3 less that twice x and 2 more than the quantity 3 times x?
A. –6x2 + 25x + 6
B. 6x2 + 5x + 6
C. 6x2– 5x + 6
D. 6x2 – 5x – 6
E. 6x2 – 13x – 6 展开
A. –6x2 + 25x + 6
B. 6x2 + 5x + 6
C. 6x2– 5x + 6
D. 6x2 – 5x – 6
E. 6x2 – 13x – 6 展开
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题干的意思是:以下表达式哪一项等于(2倍x小3)和(比3倍x大2)的乘积,也就是(2x-3)(3x+2)=6x^2-5x-6。选D
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