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Simplifying
-2x2 + 19 = -13
Reorder the terms:
19 + -2x2 = -13
Solving
19 + -2x2 = -13
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-19' to each side of the equation.
19 + -19 + -2x2 = -13 + -19
Combine like terms: 19 + -19 = 0
0 + -2x2 = -13 + -19
-2x2 = -13 + -19
Combine like terms: -13 + -19 = -32
-2x2 = -32
Divide each side by '-2'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
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