Solve using the quadratic formula.3y2−y−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.y=_____ or y=_____
Q. Solve using the quadratic formula.3y2−y−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.y=_____ or y=_____
Quadratic Formula: The quadratic formula is given by y=2a−b±b2−4ac, where a, b, and c are the coefficients from the quadratic equationay2+by+c=0. In this case, a=3, b=−1, and c=−5.
Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b2−4ac. Here, it is (−1)2−4(3)(−5).
Find Discriminant: Perform the calculation: 1−(−60)=1+60=61. The discriminant is 61.
Plug Values into Formula: Now, plug the values of a, b, and the discriminant into the quadratic formula to find the two possible values for y.y=2×3−(−1)±61
Simplify Equation: Simplify the equation by calculating the numerator for both the plus and minus scenarios.y=61±61
Write Solutions: Since 61 cannot be simplified to an integer or a simple fraction, we will leave it as is and write the two solutions for y.y=61+61 or y=61−61
Approximate Solutions: If necessary, approximate the solutions to the nearest hundredth. y≈(1+7.81)/6≈8.81/6≈1.47 or y≈(1−7.81)/6≈−6.81/6≈−1.14
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