4+3.8=x^2

Solution for 4+3.8=x^2 equation:

Simplifying
4 + 3.8 = x2

Combine like terms: 4 + 3.8 = 7.8
7.8 = x2

Solving
7.8 = x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
7.8 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
7.8 + -1x2 = 0

Add '-7.8' to each side of the equation.
7.8 + -7.8 + -1x2 = 0 + -7.8

Combine like terms: 7.8 + -7.8 = 0.0
0.0 + -1x2 = 0 + -7.8
-1x2 = 0 + -7.8

Combine like terms: 0 + -7.8 = -7.8
-1x2 = -7.8

Divide each side by '-1'.
x2 = 7.8

Simplifying
x2 = 7.8

Take the square root of each side:
x = {-2.792848009, 2.792848009}