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b2 4ac rules. A quadratic equation is an equation that can be written as ax ² bx c where a 0In other words a quadratic equation must have a squared term as its highest power. It is called the Discriminant because it can discriminate between the possible types of answer.
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First we bring the equation to the form ax²bxc0 where a b and c are coefficients. If b2 4ac then there are two real roots of ar. F o r m u l a Discriminant b 2 4 a c.
Say x 2 -1 is a quadratic equation.
What does this formula tell us. Previous section Problems Next page The Quadratic Formula page 2. 5x 1 0 has two real. A quadratic equation is an equation that can be written as ax ² bx c where a 0In other words a quadratic equation must have a squared term as its highest power.
