Solve by completing the square.j2−18j=23Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.j= _____ or j= _____
Q. Solve by completing the square.j2−18j=23Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.j= _____ or j= _____
Move Constant Term: Rewrite the equation in the form of j2+bj=c. We have the equation j2−18j=23. To complete the square, we need to move the constant term to the other side of the equation. j2−18j+___=23+___
Find Completing Number: Find the number to complete the square.To complete the square, we need to add (b/2)2 to both sides of the equation, where b is the coefficient of j. In this case, b=−18.(−18/2)2=81So we add 81 to both sides of the equation.j2−18j+81=23+81
Factor and Simplify: Factor the left side of the equation and simplify the right side.The left side of the equation is now a perfect square trinomial.(j−9)2=104
Take Square Root: Take the square root of both sides of the equation.To solve for j, we take the square root of both sides.(j−9)2=±104j−9=±104
Solve for j: Solve for j.We add 9 to both sides of the equation to isolate j.j=9±104Since 104 is approximately 10.20, we can write the approximate solutions.j≈9+10.20 or j≈9−10.20j≈19.20 or j≈−1.20
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