$\"\"$

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The quadratic equation is $\"\"$ .

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Apply addition property of equality: If a = b then a $\"\"$ c = b $\"\"$ c.

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$\"\"$ (Add 0.3 to each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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The equation compare to quadratic equation, then a = $\"\"$ 2, b = 0.7 and c = 0.3. $\"\"$

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Quadratic formula: $\"\"$ .

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$\"\"$ (Substitute a = $\"\"$ 2, b = 0.7 and c = 0.3)

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$\"\"$ (Evaluate power: $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$

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$\"\"$

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Using the calculator to evaluate square root.

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$\"\"$

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Separate the solutions $\"\"$

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$\"\"$ (Simplify)

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$\"\"$ \ \

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$\"\"$

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The solution set is $\"\"$ .