Identify Coefficients: Step Title: Identify the CoefficientsConcise Step Description: Identify the coefficients of the quadratic equation, which are the numbers in front of the variables. In this case, the coefficients are 1, −6, and 91.Step Calculation: Coefficients are 1, −6, 91.
Find Factors: Step Title: Find the FactorsConcise Step Description: Find two numbers that multiply to 91 (the last term) and add to −6 (the coefficient of the middle term).Step Calculation: Factors of 91 that add up to −6 are −1 and −91, −7 and −13. However, none of these pairs add up to −6, which means the quadratic equation cannot be factored using integers.
Factor or Use Formula: Step Title: Attempt to Factor or Use the Quadratic FormulaConcise Step Description: Since the quadratic equation cannot be factored using integers, we will use the quadratic formula to find the roots.Step Calculation: The quadratic formula is v=2a−b±b2−4ac, where a=1, b=−6, and c=91. Plugging these values in, we get v=2(1)6±(−6)2−4(1)(91)=26±36−364=26±−328. Since we have a negative number under the square root, the solutions will be complex numbers.
Calculate Discriminant: Step Title: Calculate the DiscriminantConcise Step Description: Calculate the discriminant to determine the nature of the roots.Step Calculation: The discriminant is b2−4ac=(−6)2−4(1)(91)=36−364=−328. Since the discriminant is negative, the equation has two complex solutions.