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Simplifying
2x2 + -11 = 19
Reorder the terms:
-11 + 2x2 = 19
Solving
-11 + 2x2 = 19
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '11' to each side of the equation.
-11 + 11 + 2x2 = 19 + 11
Combine like terms: -11 + 11 = 0
0 + 2x2 = 19 + 11
2x2 = 19 + 11
Combine like terms: 19 + 11 = 30
2x2 = 30
Divide each side by '2'.
x2 = 15
Simplifying
x2 = 15
Take the square root of each side:
x = {-3.872983346, 3.872983346}
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