Help solving an integral - can someone check my work?

Question

i don't know what i'm doing wrong here...
{int from 2 to 8} -2/((x-4)^2)dx

i solved the integration as 2/x-4

plug in 8 and get 1/2
plug in 2 and get -1

1/2 - -1 = -1/2

what am i doing wrong here? someone please help!

Answer 1

1/2 minus -1 is 1/2 + 1 = 3/2

I think sign mistakes?


and corndog is wrong, it's all right. and he's prob not a teacher.

Answer 2

Your last line, you have 1/2 PLUS 1 or 3/2.

Answer 3

You are correct.