if 2 devides p^2 how to proove that 2 devides p

if 2 devides p^2 how to proove that 2 devides p

$$\boxed{ \small{\text{ Even number times even number = even number. }} \small{\text{Example:}} \\ \quad 8 * 8 = 64} \boxed{ \small{\text{ Odd number times odd number = odd number. }} \small{\text{Example:}} \\ \quad 7 * 7 = 49} \\ \\ \small{\text{ $p^2=p\times p$. if $p^2$ is even then p is even and devides 2 }}$$

If 2 divides p², then p² must be even. But, if p² is even, then p must be even, and 2 divides any even number. Thus, 2 divides p......!!!!!