Solve by completing the square.x2−22x=−13Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.x= _____ or x= _____
Q. Solve by completing the square.x2−22x=−13Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.x= _____ or x= _____
Rewrite equation: Rewrite the equation in the form of x2+bx=c. Add 13 to both sides to move the constant term to the right side. x2−22x+13=0
Complete the square: To complete the square, find the value that needs to be added to both sides of the equation.Since (−222)2=121, add 121 to both sides.x2−22x+121=13+121x2−22x+121=134
Factor trinomial: Factor the left side of the equation as a perfect square trinomial.x2−22x+121=(x−11)2So the equation becomes:(x−11)2=134
Take square root: Take the square root of both sides of the equation.(x−11)2=±134x−11=±134
Solve for x: Solve for x by adding 11 to both sides of the equation.x=11±134
Calculate solutions: Calculate the approximate decimal values of the square root of 134 and add 11 to find the two solutions for x.134 is approximately 11.58.x≈11+11.58 or x≈11−11.58x≈22.58 or x≈−0.58
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