( 3.63 )^2 - ( 2.37 )^23.63 + 2.37 is simplified to :

Answer: Option A

Given expression :
$$\frac{\left(a^2-b^2\right)}{\left(a+b\right)}$$  , where a = 3.63, b = 2.37
$$\begin{array}{rl}& =\frac{\left(a-b\right)\left(a+b\right)}{\left(a+b\right)}\\ & =\left(a-b\right)\\ & =3.63-2.37\\ & =1.26\end{array}$$