Evaluate below

Question

Evaluate 

Answer 1

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