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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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