Solve by completing the square.q2−18q=37Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.q= _____ or q= _____
Q. Solve by completing the square.q2−18q=37Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.q= _____ or q= _____
Write Equation Form: Write the equation in the form of q2+bq=c. The given equation is q2−18q=37.
Move Constant Term: Move the constant term to the right side of the equation.Add 37 to both sides to isolate the q2 and q terms.q2−18q+37−37=37+37q2−18q=37
Complete the Square:Complete the square by adding (2b)2 to both sides of the equation.Since b=−18 in the equation q2−18q, we calculate (2−18)2=81.Add 81 to both sides of the equation.q2−18q+81=37+81q2−18q+81=118
Factor Perfect Square: Factor the left side of the equation as a perfect square. The left side of the equation is now a perfect square trinomial. (q−9)2=118
Take Square Root: Take the square root of both sides of the equation.To solve for q, take the square root of both sides.(q−9)2=±118q−9=±118
Solve for q: Solve for q by isolating the variable.Add 9 to both sides of the equation to isolate q.q−9+9=±118+9q=9±118
Simplify Square Root: Simplify the square root and round to the nearest hundredth if necessary. 118 is approximately 10.86 when rounded to the nearest hundredth. q=9±10.86
Find q Values: Find the two values of q.q=9+10.86 or q=9−10.86q≈19.86 or q≈−1.86
More problems from Solve a quadratic equation by completing the square