$\"\"$ $\"\"$

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The equation is $\"\"$ .

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Addition property of equality: if $\"\"$ , then $\"\"$ .

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$\"\"$ (Add 4ac from both sides)

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$

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$\"\"$ (Subtract d from both sides)

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$\"\"$ (Apply Commutative property: $\"\"$ )

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

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$\"\"$ (Apply Additive identity property: $\"\"$ ) $\"\"$

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common factors) $\"\"$

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The solution is $\"\"$

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