2x^2-4=196

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Solution for 2x^2-4=196 equation:


Simplifying
2x2 + -4 = 196

Reorder the terms:
-4 + 2x2 = 196

Solving
-4 + 2x2 = 196

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 + 2x2 = 196 + 4

Combine like terms: -4 + 4 = 0
0 + 2x2 = 196 + 4
2x2 = 196 + 4

Combine like terms: 196 + 4 = 200
2x2 = 200

Divide each side by '2'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}

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