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Evaluate 10x(x22)2dx...

Evaluate 10x(x22)2dx

A.

67

B.

116

C.

17

D.

316

Correct answer is B

10x(x22)2dx

(x22)2=x42x22x2+4

=x44x2+4

x(x22)2=x(x44x2+4)

=x54x3+4x

10x(x22)2dx=10x54x3+4xdx

=(x66x4+2x2)10

= ((1)66(1)4+2(1)2)((0)66(0)4+2(0)2)

=760=76