0.5*2x*x-4=0

Solution for 0.5*2x*x-4=0 equation:

Simplifying
0.5 * 2x * x + -4 = 0

Multiply 0.5 * 2
1x * x + -4 = 0

Multiply x * x
1x2 + -4 = 0

Reorder the terms:
-4 + 1x2 = 0

Solving
-4 + 1x2 = 0

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 1x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 1x2 = 0 + 4
1x2 = 0 + 4

Combine like terms: 0 + 4 = 4
1x2 = 4

Divide each side by '1'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}