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Evaluate 
Mathf4et121p2qn16

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1.

(1-x)(1 +x) = 1 – x
     1 + x
3
∫ (1-x)dx
-2 
x – x2/2 + c 
3 - 32 /2 + c – 2 – (-2)2 + c
= 3 – 4.5 + c - -2 + 2 + c
-1.5 + c – c
= -1.5              

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