Calculate the line integral f (2x²y + 10x + 6y − 6) dx + (−6xy + 7) dy, - where C' is the rectangle with vertices (−1, 1), (−1, 2), (-4,2), and (-4, 1) oriented clockwise. Enter an exact answer. Provide your answer below: fc(2x²y + 10x + 6y - 6) dx + (−6xy + 7) dy =

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