1310_2o3_notes - Section 2.3 Quadratic Equations Quadratic...

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1 Section 2.3 – Quadratic Equations Quadratic Equationshave the form 20+=axbxc, where 0a. Methods for solving quadratic equations: factoring taking square roots completing the square using the quadratic formula Solving quadratic equations by factoring:Move everything to one side of the equation and make sure that the coefficient of 2xis positive. Distribute if you need to; make the equation have the form 20+=axbxc. 1.Factor out any common factors of all terms 2.Factor the simplified equation. 3.Set each factor equal to zero. 4.Solve each of the resulting equations. The solution(s) to the original equation are the solutions to these simple equations. Example 1:Solve the equation 234-=xx. Example 2: Solve the equation 2420240-++=xx.
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