4=(2h)(h)

Solution for 4=(2h)(h) equation:

Simplifying
4 = (2h)(h)

Remove parenthesis around (2h)
4 = 2h(h)

Multiply h * h
4 = 2h2

Solving
4 = 2h2

Solving for variable 'h'.

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

Add '-2h2' to each side of the equation.
4 + -2h2 = 2h2 + -2h2

Combine like terms: 2h2 + -2h2 = 0
4 + -2h2 = 0

Add '-4' to each side of the equation.
4 + -4 + -2h2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -2h2 = 0 + -4
-2h2 = 0 + -4

Combine like terms: 0 + -4 = -4
-2h2 = -4

Divide each side by '-2'.
h2 = 2

Simplifying
h2 = 2

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