Solve by completing the square.s2−28s=13Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.s= _____ or s= _____
Q. Solve by completing the square.s2−28s=13Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.s= _____ or s= _____
Write Equation Form: Write the equation in the form of s2+bs=c. The given equation is already in this form: s2−28s=13.
Move Constant Term: Move the constant term to the other side of the equation.Add 13 to both sides to isolate the s2 and s terms.s2−28s+13−13=13+13s2−28s=13
Find Completing Number: Find the number to complete the square.To complete the square, we need to add (−228)2 to both sides of the equation.(−228)2=(−14)2=196s2−28s+196=13+196s2−28s+196=209
Factor Left Side: Factor the left side of the equation.The left side of the equation is now a perfect square trinomial.(s−14)2=209
Take Square Root: Take the square root of both sides of the equation.(s−14)2=±209s−14=±209
Solve for s: Solve for s.Add 14 to both sides of the equation to isolate s.s=14±209
Calculate Decimal Values: Calculate the approximate decimal values of s.209 is approximately 14.46 when rounded to the nearest hundredth.s≈14±14.46s≈14+14.46 or s≈14−14.46s≈28.46 or s≈−0.46
More problems from Solve a quadratic equation by completing the square