Question

En la formula
L=√4kt-p
despeje k

Answer 1

En la formula 
L=√4kt-p
despeje k

$L = \sqrt{4kt} - p (L)^{2} =(\sqrt{4kt})^{2} -(p)^{2}$
$L^{2} = 4kt - p^{2} L^{2}+p^{2}= 4kt$
$\frac{L^{2}+p^{2}}{4t} = k$