Perfect Square for Trig Substitution

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I start off with this perfect square and I end up having to use two different trig subs depending on the way the square is made.

Original: $3-2x-x^2$

--Option A--

= $-x^2-2x+3$

= $-(x^2+2x-3)$

= $-(x^2+2x+1-3-1)$

= $-((x+1)^2-4)$

= $-(x+1)^2 + 4$

$4- (x+1)^2$ -> use $a^2-x^2$ trig sub

--Option B--

= $-x^2-2x+3$

$-x^2-2x = -3$

$x^2+2x+1 = 3+1$

$x^2+2x+1 = 4$

$(x+1)^2 = 4$

$(x+1)^2 - 4$ -> use $x^2-a^2$ trig sub

I can understand that both options can be changed by distributing a subtraction sign. Which method is better to create a perfect square in regards to trig sub ? No matter which method I use for trig sub, will I get the same answer ?