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Evaluate 32(3x22x12)dx...

Evaluate 32(3x22x12)dx

A.

-30

B.

-18

C.

-6

D.

6

Correct answer is A

(3x22x12)dx=3x2+12+12x1+1212x

= x3x212x

(x3x212x)|32=((33)(32)12(3))((23)(22)12(2))

= (27936)(84+24)=1812=30