0=-386.4+4.9x^2

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Solution for 0=-386.4+4.9x^2 equation: 


Simplifying
0 = -386.4 + 4.9x2

Solving
0 = -386.4 + 4.9x2

Solving for variable 'x'.

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

Add '-4.9x2' to each side of the equation.
0 + -4.9x2 = -386.4 + 4.9x2 + -4.9x2
Remove the zero:
-4.9x2 = -386.4 + 4.9x2 + -4.9x2

Combine like terms: 4.9x2 + -4.9x2 = 0.0
-4.9x2 = -386.4 + 0.0
-4.9x2 = -386.4

Divide each side by '-4.9'.
x2 = 78.85714286

Simplifying
x2 = 78.85714286

Take the square root of each side:
x = {-8.880154439, 8.880154439}

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