Roots of quadratic equations Quadratic equations of the form can be solved by first reducing the equation to the form (where and ), and then aligning the index ("1") of the C scale to the value on the D scale. The cursor is then moved along the rule until a position is found where the numbers on the CI and D scales add up to . These two values are the roots of the equation.
roots of quadratic equations quadratic equations of the form can be solved by first reducing the equation to the form (where and ) and then aligning the index ("1") of the c scale to the value on the d scale the cursor is then moved along the rule until a position is found where the numbers on the ci and d scales add up to  these two values are the roots of the equation