Solve using the quadratic formula.2f2−8f+7=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.f=_____ or f=_____
Q. Solve using the quadratic formula.2f2−8f+7=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.f=_____ or f=_____
Identify values: Identify the values of a, b, and c in the quadratic equation2f2−8f+7=0. The quadratic equation is in the form af2+bf+c=0, so by comparing: a=2b=−8c=7
Substitute values: Substitute the values of a, b, and c into the quadratic formula.The quadratic formula is f=2a−b±b2−4ac.Substituting the values we get:f=2⋅2−(−8)±(−8)2−4⋅2⋅7
Simplify equation: Simplify the equation.f=48±64−56f=48±8Since 8 simplifies to 22, we can write:f=48±22
Divide terms: Simplify further by dividing the terms by 4.f=48±422f=2±22
Write solutions: Write the final solutions.The two possible values for f are:f=2+(2/2) or f=2−(2/2)To round to the nearest hundredth:f≈2+0.71 or f≈2−0.71f≈2.71 or f≈1.29
More problems from Solve a quadratic equation using the quadratic formula