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## Homework Statement

Ok part of my math homework leads me to do this integral

The integral from 0 to 7 of sqrt((2t-10)^2) dt

## Homework Equations

## The Attempt at a Solution

The answer is 29, but I can only seem to get -21. I have it = integral of (2t-10)dt, so then I get t^2 - 10t from 0 to 7 = 49-70 = -21. Any help is appreciated. Thanks