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Question

The coefficient of x2 in (7x - 5)(5x2 - 3x + 1) is .


A

-46

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B

16

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C

-16

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D

46

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Solution

The correct option is A

-46


The coefficient of x2 in (7x - 5) (5x2 - 3x +1) = -25x2-21x2 = - 46x2


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