Evaluate

1.

(1-x)(1 +x) = 1 – x 1 + x_{3}∫ (1-x)dx^{-2} x – x^{2}/2 + c 3 - 3^{2} /2 + c – 2 – (-2)^{2} + c= 3 – 4.5 + c - -2 + 2 + c-1.5 + c – c= -1.5

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