Solve by completing the square.p2−8p=23Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p= _____ or p= _____
Q. Solve by completing the square.p2−8p=23Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.p= _____ or p= _____
Rewrite Equation: Rewrite the equation in the form of p2+bp=c. We have the equation p2−8p=23. To complete the square, we need to move the constant term to the right side of the equation. Add 23 to both sides to isolate the p2 and p terms. p2−8p+0=23+0p2−8p=23
Add Constant Term: Choose the number to add to both sides to complete the square.To complete the square, we need to add (b/2)2 to both sides, where b is the coefficient of p. In this case, b=−8.(−8/2)2=(−4)2=16Add 16 to both sides of the equation.p2−8p+16=23+16p2−8p+16=39
Choose Number to Add: Factor the left side of the equation.The left side of the equation is now a perfect square trinomial.(p−4)2=39
Factor Left Side: Take the square root of both sides of the equation.To solve for p, take the square root of both sides.(p−4)2=±39p−4=±39
Take Square Root: Solve for p.To isolate p, add 4 to both sides of the equation.p−4+4=±39+4p = 4±39
Solve for p: Approximate the square root of 39 to the nearest hundredth.39 is approximately 6.24 (rounded to the nearest hundredth). So, p≈4±6.24
Approximate Square Root: Find the two values of p.p≈4+6.24 implies p≈10.24.p≈4−6.24 implies p≈−2.24.Values of p: 10.24, −2.24
More problems from Solve a quadratic equation by completing the square