OpenStax, Elementary Algebra 2e §10.2 Solve Quadratic Equations by Completing the Square · Try It 10 · Algebra · Quadratics
Solve Quadratic Equations by Completing the Square · Try It 10
Solve by completing the square.
OpenStax, Elementary Algebra 2e · §10.2 Solve Quadratic Equations by Completing the Square · Try It 10
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Checked against the answer in OpenStax, Elementary Algebra 2e.