sinh(x^2)

Is the following statement valid?



[itex]sinh{x^2}=\frac{e^{x^2}-e^{x^2}}{2}[/itex]



Reason I ask cause I know that [itex]sinh{x}=\frac{e^{x}-e^{x}}{2}[/itex], so i assume the same rules can apply