1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sphinxa [80]
3 years ago
10

Give an example of how you would solve an equation by completing the square. Describe the steps.

Mathematics
1 answer:
klemol [59]3 years ago
4 0

Answer:

Step-by-step explanation:

to solve an equation by completing the square in a quadratic formula

f(x)=ax²+bx+c

example :x²-6x-16=0

first rearrange if necessary, move the constant to one side .

x²-6x=16

second you find a new term to complete the square which is (b/2)², and add the term to both sides.(6/2)²=3²=9

x²-6x+9=16+9

x²-6x+9=25

third  factorize : find the common factor between 6 and 9 which is 3

x²-6x+9=25

(x-3)²=25

last solve for x: (x-3)²=25

x-3=√25

x=3±5

x=3+5=8 or 3-5=-2

You might be interested in
Complete the statements about the system of linear equations represented by the tables. The equation representing the left table
Marizza181 [45]
Ok it’s 21 because meme kid said 9 + 10 so it’s 21 because add car and dog and it makes a 420 blaze it
3 0
3 years ago
Read 3 more answers
Help? I'm not exactly sure how to do this :/
uranmaximum [27]
What you do is plug the z value (first column) into the formula (second column), and solve for y. For instance, the first one would be y = -1-2, or -3. The x would be the x in the ordered pair, and the final ordered pair would be (-1,-3). Make sense?
6 0
3 years ago
What is the sum of the first five terms of a geometric series with a1 = 20 and r = 1/4?
SVETLANKA909090 [29]
For the answer to the question above,
The first term is 20 
<span>The second term is 20* 1/4 = 5 </span>
<span>The third term is 5 * 1/4 = 5/4 </span>
<span>The 4th term is 5/4 * 1/4 = 5/16 </span>
<span>The 5th term is 5/16 * 1/4 = 5/64 </span>

<span>Sum is therefore 20 + 5 + 5/4 + 5/16 + 5/64 </span>
To complete my answer,
<span>= (1280 + 320 + 80 + 20 + 5) / 64 </span>
<span>= 1705/64
</span>
I hope my answer helped you. Have a nice day!
7 0
4 years ago
Read 2 more answers
A high school track​ team's long jump record is 24 ft 2 1/4 in This​ year, Hal​'s best long jump is 23 ft 9 1/2 in If long jumps
rjkz [21]

24 ft 2 1/4 inches - 23 ft 9 1/2 inches = 4 3/4 inches.

4 3/4 inches would tie it, so now add 1/4 more inches:

4 3/4 + 1/4 = 5 inches.

He needs to jump 5 inches more.

7 0
3 years ago
I need help with this, it just doesn’t make sense to me.
Ann [662]

2 hundred dollar bills is $200. 6 twenty dollar bills is $120. 5 ten dollar bills is $50. 18 one dollar bills is $18. 6 quarters is $1.50. 12 dimes is $1.20. a check for $200 is $200. a check for $11.12 is $11.12. add these up, you get $601.82

5 0
3 years ago
Other questions:
  • Find the length of the leg. If your answer is not an integer, leave it in simplest radical form. answer asap pls
    10·2 answers
  • How to subrtact a negative from a negative?
    6·2 answers
  • What property is illustrated in the equation?: (5 + 3) + 0 = 5 + 3
    13·1 answer
  • For each value of u, determine whether it is a solution to -15 = 1 - 4u
    5·1 answer
  • Write the equation 9y = 12x + 0.2 in standard form. Identify A, B, and C.
    9·1 answer
  • Martin is driving to his uncle’s farm, which is 240 mi. from home. If he drives at a constant rate of 60 mph, how long will it t
    9·1 answer
  • Write the answer as a mixed number fraction (if possible).<br> 8 1<br> 5<br> ÷ <br> 7 1<br> 2
    11·2 answers
  • 1. Consider the surface area of the following pyramid.
    10·2 answers
  • F(x)=8+5x <br> What’s the family function
    11·1 answer
  • What property does 5(a) = a(5) belong to?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!