Solve by completing the square.q2−24q−31=0Write 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.q2−24q−31=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.q=_____ or q=_____
Rewrite Equation: Rewrite the equation in the form of q2+bq=c. Add 31 to both sides to set the equation up for completing the square. q2−24q−31+31=0+31q2−24q=31
Add 31: Find the number to add to both sides to complete the square.Since (−224)2=144, add 144 to both sides.q2−24q+144=31+144q2−24q+144=175
Find Completing Square Number: Factor the left side of the equation.q2−24q+144=175(q−12)2=175
Factor Left Side: Take the square root of both sides of the equation.(q−12)2=175q−12=±175
Take Square Root: Isolate the variable q.To isolate q, add 12 to both sides of the equation.q−12+12=±175+12q=12±175
Isolate Variable: Simplify the square root and round to the nearest hundredth if necessary. 175 is approximately 13.23 when rounded to the nearest hundredth. So, q=12±13.23
Simplify Square Root: Find the two values of q.q=12+13.23 implies q≈25.23.q=12−13.23 implies q≈−1.23.Values of q: 25.23, −1.23
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