Solve using the quadratic formula.2k2−k−9=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Q. Solve using the quadratic formula.2k2−k−9=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Identify coefficients: Identify the coefficients a, b, and c in the quadratic equation2k2−k−9=0 by comparing it to the standard form ax2+bx+c=0.a=2, b=−1, c=−9
Substitute values into formula: Substitute the values of a, b, and c into the quadratic formula, k=2a−b±b2−4ac.k=2⋅2−(−1)±(−1)2−4⋅2⋅(−9)
Simplify expression and constants: Simplify the expression inside the square root and the constants outside the square root. k=41±1+72k=41±73
Calculate possible solutions: Calculate the two possible solutions for k using the simplified square root value.k=41+73 or k=41−73
Round values if necessary: If necessary, round the values of k to the nearest hundredth.k≈(1+8.54)/4 or k≈(1−8.54)/4k≈9.54/4 or k≈−7.54/4k≈2.39 or k≈−1.89
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