Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Solve using the quadratic formula.\newline3y2y5=03y^2 - y - 5 = 0\newlineWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.\newliney=y = _____ or y=y = _____

Full solution

Q. Solve using the quadratic formula.\newline3y2y5=03y^2 - y - 5 = 0\newlineWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.\newliney=y = _____ or y=y = _____
  1. Quadratic Formula: The quadratic formula is given by y=b±b24ac2ay = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where aa, bb, and cc are the coefficients from the quadratic equation ay2+by+c=0ay^2 + by + c = 0. In this case, a=3a = 3, b=1b = -1, and c=5c = -5.
  2. Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b24acb^2 - 4ac. Here, it is (1)24(3)(5)(-1)^2 - 4(3)(-5).
  3. Find Discriminant: Perform the calculation: 1(60)=1+60=611 - (-60) = 1 + 60 = 61. The discriminant is 6161.
  4. Plug Values into Formula: Now, plug the values of aa, bb, and the discriminant into the quadratic formula to find the two possible values for yy.y=(1)±612×3y = \frac{-(-1) \pm \sqrt{61}}{2 \times 3}
  5. Simplify Equation: Simplify the equation by calculating the numerator for both the plus and minus scenarios.\newliney=1±616y = \frac{1 \pm \sqrt{61}}{6}
  6. Write Solutions: Since 61\sqrt{61} cannot be simplified to an integer or a simple fraction, we will leave it as is and write the two solutions for yy.\newliney=1+616y = \frac{1 + \sqrt{61}}{6} or y=1616y = \frac{1 - \sqrt{61}}{6}
  7. Approximate Solutions: If necessary, approximate the solutions to the nearest hundredth. y(1+7.81)/68.81/61.47y \approx (1 + 7.81) / 6 \approx 8.81 / 6 \approx 1.47 or y(17.81)/66.81/61.14y \approx (1 - 7.81) / 6 \approx -6.81 / 6 \approx -1.14

More problems from Solve a quadratic equation using the quadratic formula