Question

Rewrite the equation by completing the square x^+11x+24=0

288

likes
1439 views

Answer to a math question Rewrite the equation by completing the square x^+11x+24=0

Expert avatar
Brice
4.8
113 Answers
1. Start with the equation:

x^2 + 11x + 24 = 0

2. Isolate the constant term on one side:

x^2 + 11x = -24

3. Complete the square by adding and subtracting the square of half the coefficient of \( x \):

x^2 + 11x + \left(\frac{11}{2}\right)^2 = -24 + \left(\frac{11}{2}\right)^2

4. Simplify:

x^2 + 11x + \frac{121}{4} = -24 + \frac{121}{4}

5. Convert -24 to a fraction with a common denominator:

-24 = \frac{-96}{4}

6. Combine the fractions:

x^2 + 11x + \frac{121}{4} = \frac{-96}{4} + \frac{121}{4}

x^2 + 11x + \frac{121}{4} = \frac{25}{4}

7. Rewrite the left-hand side as a square:

\left(x + \frac{11}{2}\right)^2 = \frac{25}{4}

8. Isolate the perfect square term:

\left(x + \frac{11}{2}\right)^2 = \frac{25}{4}

Frequently asked questions (FAQs)
What is the length of the hypotenuse of a right triangle with legs of 5 cm and 12 cm?
+
How many diagonals are there in a 12-sided polygon of any type?
+
What is the y-coordinate of the point on the graph of y = log(x) where x = 10?
+
New questions in Mathematics
Add. 7/w²+18w+81 + 1/w²-81
-x+3x-2,si x=3
A client did not advance L 10,000 for the rental of a parking area and it corresponds to 4 months, of which 2 months were consumed
Evaluate limx→∞tan−1(x) using that y=tan−1(x) exactly when x=tan(y) . (Hint: Both tan and tan−1 are continuous!)
A food delivery company charges on average a delivery fee of $5 per order (including food and shipping) and has monthly fixed costs of $600. If the average cost of each meal delivered that is revenue for the company is $10 and the company has a monthly profit of $800, how many orders must they deliver per month?
The mean temperature for july in H-town 73 degrees fahrenheit. Assuming that the distribution of temperature is normal what would the standart deviation have to be if 5% of the days in july have a temperature of at least 87 degrees?
A brass cube with an edge of 3 cm at 40 °C increased its volume to 27.12 cm3. What is the final temperature that achieves this increase?
The director of a company must transfer 6 people from the human resources department to the sales department, in order to sustain sales during the month of December. What is the probability that he will transfer only 2 of them?
-4y-6(2z-4y)-6
There are 162 students enrolled in the basic mathematics course. If the number of women is 8 times the number of men, how many women are there in the basic mathematics course?
A merchant can sell 20 electric shavers a day at a price of 25 each, but he can sell 30 if he sets a price of 20 for each electric shaver. Determine the demand equation, assuming it is linear. Consider (P= price, X= quantity demanded)
A vaccine has a 90% probability of being effective in preventing a certain disease. The probability of getting the disease if a person is not vaccinated is 50%. In a certain geographic region, 60% of the people get vaccinated. If a person is selected at random from this region, find the probability that he or she will contract the disease. (4 Points)
Use a pattern to prove that (-2)-(-3)=1
Next%C3%B3n%2C+we+are+given+a+series+of+Tri%C3%A1angles+Right%C3%A1angles+%3Cbr%2F%3Ey+in+each+one+of+them+ are+known+2%28two%29+measurements+of+sides.+%3Cbr%2F%3Elet's+determine+all+trigonom%C3%A9tric+ratios.
A bag has 4 green lollipops, 3 white lollipops, and 1 black lollipop. What is the probability of drawing a white lollipop?
effectiveness of fiscal and monetary policy under closed and open economies
Find the area of a triangle ABC when m<C = 14 degrees, a = 5.7 miles, and b = 9.3 miles.
A 20,000 kg school bus is moving at 30 km per hour on a straight road. At that moment, it applies the brakes until it comes to a complete stop after 15 seconds. Calculate the acceleration and the force acting on the body.
The blood types of individuals in society are as follows: A: 30%, B: 25%, AB: 20%, 0: 25%. It is known that the rates of contracting a certain disease according to blood groups are as follows: A: 7%, B: 6%, AB: 7%, 0: 4%. Accordingly, if a person selected by chance is known to have this disease, what is the probability of having blood group O?
What is the percentage of nitrogen abundance in copper dinatrate Cu(NO3)2