单选题(4a+a-3)(4b-2b-b) = ______.A2a-bB2ab-2bC5ab – bD5ab-3bE3ab
单选题
(4a+a-3)(4b-2b-b) = ______.
A
2a-b
B
2ab-2b
C
5ab – b
D
5ab-3b
E
3ab
参考解析
解析：
Before multiplying, simplify each expression inside the parentheses: (4a + a - 3)(4b - 2b - b) = (5a - 3)(4b - 3b)= (5a - 3)B.= 5ab - 3b
Before multiplying, simplify each expression inside the parentheses: (4a + a - 3)(4b - 2b - b) = (5a - 3)(4b - 3b)= (5a - 3)B.= 5ab - 3b
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