1. how to apply quadratic formula to this

$2^{2x}-4^x\sinh{x}-1=0$

How might I apply the quadratic equation to this so as to solve for x?

Or how might I solve for x via any method?

Thanks

2. Step in the right direction

Add 1 to both sides, translate sinhx into exponential form, take the natural logarithm of both sides, then continue from there.