3a−[4a−¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯3a−5b−3{2a−(3a−¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯2a−3b)}] equals
Area of the triangle formed by the points ((a+3) (a+4) a+3), ((a+2) (a+3),(a+2)) and ((a+1) (a+2) (a+1))