Question

Prove:
E = mc²

I need the solution fast, with proper steps. It would be good if you attach a photo.

Answer 1

one of Albert Einstein’s revolutionary scientific papers published in 1905, E=mc2 was introduced; where E is energy, m is mass, and c is the speed of light in a vacuum.[1] Since then, E=mc2 has become one of the most famous equations in the world. Even people with no background in physics have at least heard of the equation and are aware of its prodigious influence on the world we live in. However, most people do not exactly know what the equation means. In simple terms, the equation represents the correlation of energy to matter: essentially, energy and matter are but two different forms of the same thing.[2] This relatively simple equation has altered the way we think about energy and provided us with numerous technological advances.

Part One of Two:
Understanding the Equation

1
Define the variables of the equation. The first step to understanding any equation is to know what each variable stands for. In this case, E is the energy of an object at rest, m is the object's mass, and c is the speed of light in vacuum.
The speed of light, c is constant in all reference frames and is roughly equal to 3.00x108 meters per second. In the context of Einstein's relativity, the c2 functions more as a unit conversion factor than a constant. As such, it is squared as a result of dimensional analysis - energy is measured in joules, or kg m2 s-2, so adding the c2 ensures that the relationship between energy and mass is dimensionally consistent

Answer 2

E = Relativistic kinetic energy + mc² ( m stands for mass while c stands for speed of light in vacuum)
E=0+mc²
E=mc²
hence proved.
its the simple way