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
Alenkinab [10]
3 years ago
13

Solve this quadratic equation by completing the square. x2 + 10x = 26

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
7 0
Ax^2+bx+c=d
to comlete teh square
minus c to both sides
make sure a=1, if not, divide both sides by a
take 1/2 of b, then square that and add that to both sides

so
x^2+10x=26
c is already over
a=1
b=10
10/2=5
5^2=25
add 25 both sides
x^2+10x+25=26+25
factor
(x+5)^2=51
sqrt both sides
x+5=+/-√51
 minus 5
x=-5+/-√51

x=-5+√51 or -5-√51
Misha Larkins [42]3 years ago
5 0
                        x² + 10x = 26
                x² + 10x + 25 = 26 + 25
          x² + 5x + 5x + 25 = 51
x(x) + x(5) + 5(x) + 5(5) = 51
         x(x + 5) + 5(x + 5) = 51
                 (x + 5)(x + 5) = 51
                          (x + 5)² = 51
                             x + 5 = ±√(51)
                                 - 5      - 5
                                   x = -5 ± √(51)
                                   x = -5 + √(51)    or    x = -5 - √(51)
You might be interested in
Subtract: 7 7/10 -3 4/5 =
andrey2020 [161]

Answer:

3 9/10

Step-by-step explanation:

in first step convert mix fraction into simple fraction then take LCM and then subtract it.

6 0
3 years ago
a ratio table! need help asap!!! Time (secs): | 4 | 8 | 12 | 16 | 20 | Distance (miles): - the bottom row is empty and i need he
Naddika [18.5K]
There is missing information required in order to find the solution. I need the satellite speed
8 0
3 years ago
Graph help fast!!!!!!!!!!1111
ki77a [65]

Answer:

(0,0)

(1,3)

(2,6)

(3,9)

(-1,-3)

(-2,-6)

(-3,-9)

Step-by-step explanation:

The equation of the graph is y=3x

5 0
2 years ago
with the major options package and destination charge, a sports car costs $24,416. the base price of the car was ten times the p
victus00 [196]
<span />x=base price
x/10=major options package
x/50=destination charge

x+x/10+x/50=24,416

x=21,800
3 0
3 years ago
GUYS PLEASE HELP IM IN NEED I WILL MARK BRAINLIEST
jekas [21]
The answer would be 1/3 up 1 over 3.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Justin brought a 20 pounds pumpkins for $9.80. How much did he pay per pound?
    13·2 answers
  • Classify the following expression by degree and term:x3y + 5xyz
    5·2 answers
  • Which number is greater? 0.086 or 86%
    12·1 answer
  • The graph shows the distance Julian drives on a trip. What is Julian’s speed
    10·2 answers
  • A construnction company charges $15 per hour for debris removal, plus a one-time fee for the use of a trash dumpster. The total
    14·2 answers
  • A circle of red roses is planted in Clarksville's central park. The circle has a diameter of 8 feet. What is the circle's circum
    10·1 answer
  • If an object is dropped from a height of 141 feet, the function LaTeX: h\left(t\right)=-16t^2+141h ( t ) = − 16 t 2 + 141 give t
    13·1 answer
  • the average adult horse needs 2/5 bale of hay each day to met dietary requirements. A horse farm has 44 bales of hay. how many h
    11·1 answer
  • In testing hypotheses, which of the following would be strong evidence against the null hypothesis?
    12·1 answer
  • Find the values of acts and why. Dragon drop the correct values in the box is below:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!