export interface IRoot {
    firstRoot: number;
    secondRoot: number;
}
/**
 * @name quadratic
 * @summary Returns the root.
 *
 * @description Returns the first and second root of a quadratice equation
 *
 * @example
 * // Normal usage
 * let result = root(4,4,1);
 * // => {firstRoot: -0.5, secondRoot: -0.5}
 *
 * @param {number} a
 * @param {number} b
 * @param {number} c
 * @returns {IRoot} the resulting root.
 *
 * @function pure
 */
export default function quadratic(a: number, b: number, c: number): IRoot;