1328400=0.5*9840*x^2

Solution for 1328400=0.5*9840*x^2 equation:

Simplifying
1328400 = 0.5 * 9840x2

Multiply 0.5 * 9840
1328400 = 4920x2

Solving
1328400 = 4920x2

Solving for variable 'x'.

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

Add '-4920x2' to each side of the equation.
1328400 + -4920x2 = 4920x2 + -4920x2

Combine like terms: 4920x2 + -4920x2 = 0
1328400 + -4920x2 = 0

Add '-1328400' to each side of the equation.
1328400 + -1328400 + -4920x2 = 0 + -1328400

Combine like terms: 1328400 + -1328400 = 0
0 + -4920x2 = 0 + -1328400
-4920x2 = 0 + -1328400

Combine like terms: 0 + -1328400 = -1328400
-4920x2 = -1328400

Divide each side by '-4920'.
x2 = 270

Simplifying
x2 = 270

Take the square root of each side:
x = {-16.431676725, 16.431676725}