Solve using the quadratic formula.3r2−5r+2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.r=_____ or r=_____
Q. Solve using the quadratic formula.3r2−5r+2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.r=_____ or r=_____
Quadratic Formula: The quadratic formula is given by r=2a−b±b2−4ac, where a, b, and c are the coefficients from the quadratic equationax2+bx+c=0. In this case, a=3, b=−5, and c=2.
Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b2−4ac. Here, it is (−5)2−4(3)(2).
Perform Calculation: Perform the calculation: (−5)2−4(3)(2)=25−24=1.
Plug in Discriminant: Now, plug the discriminant back into the quadratic formula to find the two possible values for r. The formula becomes r=2×3−(−5)±1.
Simplify Formula: Simplify the formula: r=65±1.
Find Solutions: Find the two possible solutions for r by performing the addition and subtraction: r=65+1 and r=65−1.
Calculate Solutions: Calculate the two solutions: r=66 and r=64.
Final Answers: Simplify the fractions to get the final answers: r=1 and r=32.
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