172=e^2+3

Solution for 172=e^2+3 equation:

Simplifying
172 = e2 + 3

Reorder the terms:
172 = 3 + e2

Solving
172 = 3 + e2

Solving for variable 'e'.

Move all terms containing e to the left, all other terms to the right.

Add '-1e2' to each side of the equation.
172 + -1e2 = 3 + e2 + -1e2

Combine like terms: e2 + -1e2 = 0
172 + -1e2 = 3 + 0
172 + -1e2 = 3

Add '-172' to each side of the equation.
172 + -172 + -1e2 = 3 + -172

Combine like terms: 172 + -172 = 0
0 + -1e2 = 3 + -172
-1e2 = 3 + -172

Combine like terms: 3 + -172 = -169
-1e2 = -169

Divide each side by '-1'.
e2 = 169

Simplifying
e2 = 169

Take the square root of each side:
e = {-13, 13}