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Simplifying
5x2 + -200 = 205
Reorder the terms:
-200 + 5x2 = 205
Solving
-200 + 5x2 = 205
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '200' to each side of the equation.
-200 + 200 + 5x2 = 205 + 200
Combine like terms: -200 + 200 = 0
0 + 5x2 = 205 + 200
5x2 = 205 + 200
Combine like terms: 205 + 200 = 405
5x2 = 405
Divide each side by '5'.
x2 = 81
Simplifying
x2 = 81
Take the square root of each side:
x = {-9, 9}
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