Solve by completing the square.m2+18m=−11Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.m= _____ or m= _____
Q. Solve by completing the square.m2+18m=−11Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.m= _____ or m= _____
Rewrite equation: Rewrite the equation in the form of m2+bm=c. We have the equation m2+18m=−11. To complete the square, we need to move the constant term to the other side. Add 11 to both sides of the equation. m2+18m+11=−11+11m2+18m+11=0
Move constant term: Choose the equation after completing the square.Since (218)2=81, add 81 to both sides to complete the square.m2+18m+81=11+81m2+18m+81=92
Complete the square: Identify the equation after factoring the left side.The left side is a perfect square trinomial.(m+9)2=92
Choose completed equation: Identify the equation after taking the square root on both sides.Take the square root of both sides of the equation.(m+9)2=±92m + 9 = ±92
Factor left side: Choose the equation after isolating the variable m. To isolate m, subtract 9 from both sides of the equation. m+9−9=±92−9m=±92−9
Take square root: Calculate the approximate values of m.m≈±9.60−9m≈9.60−9 or m≈−9.60−9m≈0.60 or m≈−18.60Round the non-terminating values to the nearest hundredth.
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