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
SVETLANKA909090 [29]
3 years ago
13

4x2+16x+8=0 by completing the square

Mathematics
1 answer:
zlopas [31]3 years ago
5 0

Answer:

Add  

8

to both sides of the equation.

2

x

2

+

16

x

=

8

Divide each term by  

2

and simplify.

Tap for more steps...

x

2

+

8

x

=

4

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of  

b

.

(

b

2

)

2

=

(

4

)

2

Add the term to each side of the equation.

x

2

+

8

x

+

(

4

)

2

=

4

+

(

4

)

2

Simplify the equation.

Tap for more steps...

x

2

+

8

x

+

16

=

20

Factor the perfect trinomial square into  

(

x

+

4

)

2

.

(

x

+

4

)

2

=

20

Solve the equation for  

x

.

Tap for more steps...

x

=

±

2

√

5

−

4

The result can be shown in multiple forms.

Exact Form:

x

=

±

2

√

5

−

4

Decimal Form:

x

=

0.47213595

…

,

−

8.47213595

…

Step-by-step explanation:

You might be interested in
function in c that takes three decimal numbers as inputs and finds the sum of those inputs and returns the sum
kozerog [31]

The function that takes three decimal numbers as inputs and finds the sum of those inputs and returns the sum has been given below

What is programming?

Program is the set of instructions given to the computer so that the computer can execute those instructions. The act of writing program is called programming.

The program has been shown below

#include<stdio.h>

using namespace std;

int main()

{

double n1, n2, n3;

double s;

printf("Enter first numbers");

scanf(%lf, &n1);

printf("Enter second numbers");

scanf(%lf, &n2);

printf("Enter third numbers");

scanf(%lf, &n3);

s = n1 + n2 + n3;

printf("Sum = %f", s);

return 0;

}

To learn more about programming refer to the link-

brainly.com/question/23275071

#SPJ4

7 0
1 year ago
PLEASE HELP: CONSUMER MATH
Katen [24]

Answer:

78.09

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
HELP PLEASE <br><br> Which graph best represents the equation y= 2x
uysha [10]

Answer:

The answer is H.

Step-by-step explanation:

There is no "b" in this y = mx + b, so it has to go through zero, eliminating the bottom two. If we insert y = 2(1), the point should be at (1, 2), and if when looking at the possible answers, we can go with letter H.

3 0
3 years ago
The family bought a car for $2000 they made a down payment of $500 if they want to pay the balance of five equal payments how mu
prisoha [69]
The balance would be 1,500$. 
1,500 divided by 5 is 300. So they would have to make five payments of 300$.
5 0
3 years ago
My other account just got banned for 40 something hour's how lame and I did nun so idk why I got banned but it's whatever
Alexxx [7]

Answer:

it is what is iss

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A train is traveling 55 mph to a destination that is 330 mi away. The function f(x)=−55x+330f(x)=−55x+330 represents the remaini
    5·1 answer
  • Find P(x): P(x^2+x+3)P(3x+1)=P(6x^3+7x^2+16x+3)​
    15·1 answer
  • What does the ratio 1/5 to 1/2 equal to simplified
    9·1 answer
  • Solve each proportion examples 1 and 2 <br> 1.5 6 = 10p p =
    15·1 answer
  • I NEED THIS ASAP
    5·1 answer
  • 1 + 1 is 2 2 plus 2 is 4 4+4 is 8+ 8 it is​
    12·2 answers
  • Part A: Explain why x = 6 makes 4x − 5 ≤ 19 true but not 4x − 5 &lt; 19. (5 points)
    14·1 answer
  • Find m<br> measure of angle YQR=? Degrees
    7·1 answer
  • no fake answers for the last time and no links please I will actually report you. answer the question and EXPLAIN it!!!!​
    15·1 answer
  • I need 5 lines with a undefined slope
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!