Solve using the quadratic formula.2n2−7n+4=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.2n2−7n+4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.n=_____ or n=_____
Quadratic Formula: The quadratic formula is given by n=2a−b±b2−4ac, where a, b, and c are the coefficients of the terms in the quadratic equationax2+bx+c=0. For the equation 2n2−7n+4=0, a=2, b=−7, 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 (−7)2−4(2)(4).
Find Discriminant: Perform the calculation: 49−32=17. The discriminant is 17.
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 n.n=(2×2)−(−7)±17
Simplify Equation: Simplify the equation by calculating the numerator for both the plus and minus scenarios.n=47±17
Find Solutions: The two solutions are n=47+17 and n=47−17. These cannot be simplified to integers or proper fractions, so we will leave them as is or convert them to decimal form.
Calculate Decimal Solutions: To express the solutions as decimals rounded to the nearest hundredth, calculate each one.First solution: n=47+17≈47+4.12≈411.12≈2.78Second solution: n=47−17≈47−4.12≈42.88≈0.72
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