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
Likurg_2 [28]
3 years ago
12

Solve x2 + 19 = 8x using the completing-the-square method.

Mathematics
1 answer:
KengaRu [80]3 years ago
5 0

Answer:

x = 4 ± i√3

Step-by-step explanation:

x² + 19 = 8x

x² - 8x = -19

x² - 8x + 16 = -3

(x - 4)² = -3

x - 4 = √-3

x = 4 ± i√3

You might be interested in
9 full moons in 252 days rate
Veronika [31]
So if you're looking for the rate, then maybe you're looking for how many days one full moon will appear. You would have to divide 252 by 9, and that would make 28.

1 FULL MOON in 28 DAYS.
4 0
3 years ago
Read 2 more answers
M more than nineteen
Gnesinka [82]
M is the variable: M
More than is addition: +
Nineteen is the number: 19
The equation is: m+19
6 0
3 years ago
4. Determine if x = -2 is a solution to 4x + 7 &lt;15.<br> a. TRUE<br> b. FALSE
Leokris [45]

Answer:

false they are equal

Step-by-step explanation:

5 0
3 years ago
Sam is purchasing flags for his flag football team and can spend no more than $50.00. If each set costs $5.50, how many flags ca
Kobotan [32]

Answer:

10 flags

Step-by-step explanation:

See the image for the full explanation!

4 0
3 years ago
It is known that x=7 is a root of the equation ax^2 + bx + 2= 0, where a&lt;0. Solve the inequality ax²4 +bx^2 + 2&gt;0.
kap26 [50]

Answer:

2/(7a) < x < 7

Step-by-step explanation:

The product of roots of ax² +bx +c is c/a. In this case, that means the second root of the equation is ...

... 2/(7a)

Since a < 0, the parabola opens downward and 2/(7a) < 0. The quadratic function will be positive between the two roots, on the interval ...

... 2/(7a) < x < 7

7 0
4 years ago
Other questions:
  • Solve for x: 2cos(2x)= -1 <br><br> This is for my Trigonometry class. Thanks in advance!
    9·1 answer
  • X-12 divided by 6=9
    12·1 answer
  • 8 times the difference between a number and 6 is equal to 4 times the number.
    12·1 answer
  • Random question what is 50+40-1*5plus 2
    15·2 answers
  • I need help pls asap​
    13·1 answer
  • Helppppp question on the image.​
    7·2 answers
  • Can u pls help :] <br> if u also answer the second one i wont be mad.. but u dont have to
    10·1 answer
  • Sammy has $180 in her savings account and plans to deposit $20 each month.<br><br>help me plz ​
    14·1 answer
  • Zorion’s mother helped him plan a budget. He had to put half of his money into savings. Whatever was left he split evenly into 3
    5·1 answer
  • The area of a rectangle is 36x⁷y5. If the length of the rectangle is 9x⁴y, which expression represents the width of the rectangl
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!