Solve using the quadratic formula.p2+7p+9=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p=_____ or p=_____
Q. Solve using the quadratic formula.p2+7p+9=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p=_____ or p=_____
Identify coefficients: Identify the coefficients of the quadratic equation.The quadratic equation is in the form ap2+bp+c=0. For the equation p2+7p+9=0, the coefficients are:a = 1 (coefficient of p2)b = 7 (coefficient of p)c = 9 (constant term)
Write formula: Write down the quadratic formula.The quadratic formula is p=2a−b±b2−4ac.
Substitute coefficients: Substitute the coefficients into the quadratic formula.Using the values of a, b, and c from Step 1, we get:p=2(1)−(7)±(7)2−4(1)(9)
Simplify square root: Simplify under the square root.Calculate the discriminant (the expression under the square root):(7)2−4(1)(9)=49−36=13
Insert discriminant: Insert the discriminant into the formula.Now we have:p=2−7±13
Write two solutions: Write down the two solutions.The quadratic formula gives us two solutions, one for the plus sign and one for the minus sign:p=2−7+13 or p=2−7−13
Simplify solutions: Simplify the solutions if possible.The square root of 13 cannot be simplified further, and the fraction cannot be reduced. Therefore, the solutions are already in their simplest form.
Round to nearest hundredth: Round the solutions to the nearest hundredth if necessary.Since the question asks for solutions as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth, we will provide the decimal approximations:p≈(−7+13)/2≈(−7+3.61)/2≈−3.39/2≈−1.70p≈(−7−13)/2≈(−7−3.61)/2≈−10.61/2≈−5.30
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