3 How should we rewrite the integrand of f x six so that we seuld express it in separate integrals of some terms? 1+1 1 O x21+l 1+1 1 O x21+l+ 1+1 0 12+x3 C) x2_x3 Q Ma current option was presented here for this item. To evaluate ( sin x . 1 - cos x )dx using substitution method (to be applied only once), we let u = O sin x O 1 - cos x O 1 - cos x O cos x O No correct option was presented here for this item.To evaluate (tan x sec2x ) x using substitution method (to be applied only once), we let u = O sec2x O sec x tan x sec x tan x No correct option was presented here for this item.How should we rewrite the integrand of (5x-3) 2 x so that it would look integrable without using the substitution method? O 25x5 - 30x4+ 9x3 O 25x - 30x2+ 9x3 O 25 - 30x -2+ 9x -3 X O 25 - 30x -2+ 9x -3 X There is no way you can avoid applying the substitution method here.How should we rewrite the integrand of x so that it would look integrable without using the substitution method? 1 + sin x O sec x - tan x sec x O sec2x - tan x sec x O csc2x - cot x CSC X O cos2x No correct option was presented here for this item