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## The quadratic formula

# Quadratic formula proof review

CCSS Math: HSA.REI.B.4, HSA.REI.B.4a, HSA.REI.B.4b

A text-based proof (not video) of the quadratic formula.

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Main content

CCSS Math: HSA.REI.B.4, HSA.REI.B.4a, HSA.REI.B.4b

A text-based proof (not video) of the quadratic formula.