7u^2-14=0

Solution for 7u^2-14=0 equation:

Simplifying
7u2 + -14 = 0

Reorder the terms:
-14 + 7u2 = 0

Solving
-14 + 7u2 = 0

Solving for variable 'u'.

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

Add '14' to each side of the equation.
-14 + 14 + 7u2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 7u2 = 0 + 14
7u2 = 0 + 14

Combine like terms: 0 + 14 = 14
7u2 = 14

Divide each side by '7'.
u2 = 2

Simplifying
u2 = 2

Take the square root of each side:
u = {-1.414213562, 1.414213562}