Solve by completing the square.w2+22w=31Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.w= _____ or w= _____
Q. Solve by completing the square.w2+22w=31Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.w= _____ or w= _____
Write Equation Form: Write the equation in the form of w2+bw=c. The given equation is already in this form: w2+22w=31.
Move Constant Term: Move the constant term to the right side of the equation.Subtract 31 from both sides to isolate the w terms on the left side.w2+22w−31=0w2+22w=31
Find Completing Square Number: Find the number to complete the square.Take half of the coefficient of w, square it, and add it to both sides of the equation.(222)2=112=121w2+22w+121=31+121w2+22w+121=152
Factor Left Side: Factor the left side of the equation.The left side is now a perfect square trinomial.(w+11)2=152
Take Square Root: Take the square root of both sides of the equation.(w+11)2=±152w+11=±152
Solve for w: Solve for w.Subtract 11 from both sides to isolate w.w=−11±152
Simplify Square Root: Simplify the square root and round to the nearest hundredth if necessary.152≈12.33 (rounded to the nearest hundredth)w=−11±12.33
Find Two Values: Find the two values of w.w=−11+12.33≈1.33w=−11−12.33≈−23.33
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