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The quadratic equation is $\"\"$ .

The equation compare to quadratic equation, then a = 1, b = 0 and c = - 25.

Quadratic formula: $\"\"$ .

$\"\"$ (Substitute a = 1, b = 0 and c = - 25)

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$\"\"$ (Multiply)

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Evaluate square roots: $\"\"$ .

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Separate the solutions $\"\"$ .

$\"\"$ (Simplify) \ \ $\"\"$

The solution set is $\"\"$ .