![]() Then we can check it with the Quadratic Formula, using these values: Let's try another example using the following equation: Use the Quadratic Formula to check factoring, for instance. Use any of these methods, and graphing, to check an answer derived using any other method. Are you still struggling? Then apply the Quadratic Formula. Start solving a quadratic by seeing if it will factor (what two factors multiply to give c that will also sum to give b?). In solving quadratics, you help yourself by knowing multiple ways to solve any equation. Leave as is, rather than writing it as a decimal equivalent ( 3.16227766 ), for greater precision. Use the calculator to verify the rounded results, but expect them to be slightly different.įor example, suppose you have an answer from the Quadratic Formula with in it. ![]() Graphing calculators will probably not be equal to the precision of the Quadratic Formula.
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