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Solve using the quadratic formula.\newliner23r7=0r^2 - 3r - 7 = 0\newlineWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.\newliner=r = _____ or r=r = _____

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Q. Solve using the quadratic formula.\newliner23r7=0r^2 - 3r - 7 = 0\newlineWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.\newliner=r = _____ or r=r = _____
  1. Quadratic Formula: The quadratic formula is given by r=b±b24ac2ar = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where aa, bb, and cc are the coefficients from the quadratic equation ar2+br+c=0ar^2 + br + c = 0. In this case, a=1a = 1, b=3b = -3, and c=7c = -7.
  2. Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b24acb^2 - 4ac. Here, it is (3)24(1)(7)(-3)^2 - 4(1)(-7).
  3. Discriminant Calculation: Perform the calculation: 9(28)=9+28=379 - (-28) = 9 + 28 = 37. The discriminant is 3737.
  4. Insert Values into Formula: Now, insert the values of aa, bb, and the discriminant into the quadratic formula: r=(3)±3721r = \frac{-(-3) \pm \sqrt{37}}{2 \cdot 1}.
  5. Simplify Equation: Simplify the equation: r=3±372r = \frac{3 \pm \sqrt{37}}{2}.
  6. Calculate First Solution: Since the discriminant is positive, there will be two real solutions. Calculate the first solution using the plus sign: r=3+372r = \frac{3 + \sqrt{37}}{2}.
  7. Calculate First Solution Value: Calculate the value of rr to the nearest hundredth: r(3+6.08)/29.08/24.54r \approx (3 + 6.08) / 2 \approx 9.08 / 2 \approx 4.54.
  8. Calculate Second Solution: Calculate the second solution using the minus sign: r=3372r = \frac{3 - \sqrt{37}}{2}.
  9. Calculate Second Solution Value: Calculate the value of rr to the nearest hundredth: r(36.08)/23.08/21.54r \approx (3 - 6.08) / 2 \approx -3.08 / 2 \approx -1.54.

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