Solve using the quadratic formula.8n2−n−2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.n=_____ or n=_____
Q. Solve using the quadratic formula.8n2−n−2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.n=_____ or n=_____
Identify coefficients: Identify coefficients a, b, and c from the quadratic equation8n2−n−2=0.a=8, b=−1, c=−2.
Write quadratic formula: Write down the quadratic formula: n=2a−b±b2−4ac.
Plug values into formula: Plug the values of a, b, and c into the quadratic formula.n=2(8)−(−1)±(−1)2−4(8)(−2).
Simplify square root: Simplify inside the square root: (−1)2−4(8)(−2)=1+64.
Calculate value inside root: Calculate the value inside the square root: 1+64=65.
Simplify equation: Simplify the equation: n=161±65.
Find two solutions: Find the two solutions for n.First solution: n=161+65.Second solution: n=161−65.
Calculate decimal values: Calculate the decimal values for both solutions, rounded to the nearest hundredth.First solution: n≈(1+8.06)/16≈9.06/16≈0.57.Second solution: n≈(1−8.06)/16≈−7.06/16≈−0.44.
More problems from Solve a quadratic equation using the quadratic formula