Solve using the quadratic formula.9v2−v−4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v=_____ or v=_____
Q. Solve using the quadratic formula.9v2−v−4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v=_____ or v=_____
Quadratic Formula Explanation: The quadratic formula is given by v=2a−b±b2−4ac, where a, b, and c are the coefficients of the terms in the quadratic equationav2+bv+c=0. In this case, a=9, b=−1, and c=−4.
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(9)(−4).
Discriminant Calculation: Perform the calculation: 1−4(9)(−4)=1+144=145.
Insert Values into Formula: Now, insert the values of a, b, and the discriminant into the quadratic formula to find the two possible values for v.v=2×9−(−1)±145v=181±145
Simplify Solutions: Simplify the two possible solutions for v:v=181+145 or v=181−145
Calculate Decimal Values: Since 145 cannot be simplified to an integer or a simple fraction, and the problem asks for the answer to be in simplest form or as a decimal rounded to the nearest hundredth, we will calculate the decimal values.v≈(1+12.04)/18 or v≈(1−12.04)/18v≈13.04/18 or v≈−11.04/18
Perform Division: Now, perform the division to get the decimal values: v≈0.724 or v≈−0.613 (rounded to the nearest hundredth).
More problems from Solve a quadratic equation using the quadratic formula