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
zysi [14]
3 years ago
13

Find the exact roots of x^2+10x-8=0 by completing the square

Mathematics
1 answer:
irinina [24]3 years ago
5 0
From the original equation x^2+10x-8=0, move the loose number on the other side. Your new equation will be x^2+10x=8. Moving an element from one side to another reverses its sign. From -8 to +8. Then take half of the x-term and square it and add it on both sides. X-term is 10x and 10 is the number, half of it is 5 then square of 5 is 25. Add 25 on both side. Your new equation will be x^2+10x+25=8+25. Then complete the square form of the left side of the equation, (x+5)^2=33. Square root both side then you will get x+5=squareroot of 33. Your x = -5 plus/minus squareroot of 33.
You might be interested in
What is the sum of the interior angles of the polygon shown below?
34kurt

Answer:

900

Step-by-step explanation:

Sum of interior angle for a polygon = (n-2)180

7 sides

=(7-2)180

=5*180

=900

8 0
3 years ago
What's the reciprocal of 2 4/7 ?​
Gnom [1K]

Answer:

7/18

Step-by-step explanation:

²\frac{4}{7}=((2*7)+4)/7

2*7=14

14+4=18

18/7⇒7/18

4 0
3 years ago
Which of the following illustrates the Distributive Property of Multiplication over addition? A. a . b = b . a B.c(-3) + c(d) =
inessss [21]

Answer:

A.

Step-by-step explanation:

took the quiz

5 0
3 years ago
Read 2 more answers
True or False. Explain reasoning
Kay [80]

Answer:

false

Step-by-step explanation:

hope it helps

yan lang po alam ko

5 0
3 years ago
PLEASE HELP!! 25 POINTS !!! Graphing
Sunny_sXe [5.5K]
A = 6, 2
B = 3, 4
C = -10, 3
D = -4, 5
E = -5, -3
F = -4, -2
G = 3, -8
4 0
2 years ago
Read 2 more answers
Other questions:
  • Find the value of y when x=2<br> 2x-1=y+4
    9·1 answer
  • (+1)+(+4) =
    7·2 answers
  • Donya ran a 3k race at a constant speed in 21 minutes 30 seconds. At this speed, how long does it take her to run 1k?
    9·2 answers
  • what you know about the toy made with 27 small cubes to find the relationship between number of cubes on each edge and the total
    14·1 answer
  • HELP ASAP GIVING TONS OF POINTS
    7·1 answer
  • Which of the following expressions is not equivalent to -4.5 • -8?
    5·1 answer
  • I need help what is the answer?
    6·2 answers
  • Which sequence of transformations could be used to map triangle MNO onto M”N”O”?
    6·2 answers
  • A. mg- fp sin theta<br>B. mg-fp cos theta<br>c. Mg + fp sin theta<br>d. mg​
    5·1 answer
  • Which expression has the same value as the one below?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!