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Solve for v.
v^(2)-6v=-91

Solve for vv.\newlinev26v=91 v^{2}-6 v=-91

Full solution

Q. Solve for vv.\newlinev26v=91 v^{2}-6 v=-91
  1. Identify Coefficients: Step Title: Identify the Coefficients\newlineConcise Step Description: Identify the coefficients of the quadratic equation, which are the numbers in front of the variables. In this case, the coefficients are 11, 6-6, and 9191.\newlineStep Calculation: Coefficients are 11, 6-6, 9191.
  2. Find Factors: Step Title: Find the Factors\newlineConcise Step Description: Find two numbers that multiply to 9191 (the last term) and add to 6-6 (the coefficient of the middle term).\newlineStep Calculation: Factors of 9191 that add up to 6-6 are 1-1 and 91-91, 7-7 and 13-13. However, none of these pairs add up to 6-6, which means the quadratic equation cannot be factored using integers.
  3. Factor or Use Formula: Step Title: Attempt to Factor or Use the Quadratic Formula\newlineConcise Step Description: Since the quadratic equation cannot be factored using integers, we will use the quadratic formula to find the roots.\newlineStep Calculation: The quadratic formula is v=b±b24ac2av = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a=1a = 1, b=6b = -6, and c=91c = 91. Plugging these values in, we get v=6±(6)24(1)(91)2(1)=6±363642=6±3282v = \frac{6 \pm \sqrt{(-6)^2 - 4(1)(91)}}{2(1)} = \frac{6 \pm \sqrt{36 - 364}}{2} = \frac{6 \pm \sqrt{-328}}{2}. Since we have a negative number under the square root, the solutions will be complex numbers.
  4. Calculate Discriminant: Step Title: Calculate the Discriminant\newlineConcise Step Description: Calculate the discriminant to determine the nature of the roots.\newlineStep Calculation: The discriminant is b24ac=(6)24(1)(91)=36364=328b^2 - 4ac = (-6)^2 - 4(1)(91) = 36 - 364 = -328. Since the discriminant is negative, the equation has two complex solutions.