Mathematics

Mathematics, 05.10.2019 02:30, allisondelp6

Solve x^2+6x+8 by completing the square.

answer

Answers: 2

Show answers

Answers

Answer

answered: anyar

(x - 4) (x-2)

hope this help

you have to find factors that when you do the foil method ends up being the original equation

Answer

answered: geunagillis1

"Completing the square" is how the quadratic equation is derived. If the quadratic ax^2+bx+c=0, for unknown values of a,b, and c, you arrive at:

x=(-b±√(b^2-4ac))/(2a)

You proceed in this manner:

x^2+6x+8=0 Since the leading coefficient is already one, no division is necessary. You then move the constant to the other side of the equation by subtracting 8 from both sides...

x^2+6x=-8 Then you halve the linear coefficient, square it, and add that value to both sides. (6/2)^2=9 so

x^2+6x+9=1 Now the left side is a "perfect square" equal to:

(x+3)^2=1 Now take the square root of both sides

x+3=±√1 Subtract 3 from both sides

x=-3±√1 So x is equal to:

x=-3-1 and -3+1

x=-4 and -2 or in factored form

(x+4)(x+2)

The same process for unknown a,b, and c:

ax^2+bx+c=0

x^2+bx/a+c/a=0

x^2+bx/a=-c/a

x^2+bx/a+b^2/(4a^2)=b^2/(4a^2)-c/a

x^2+bx/a+b^2/(4a^2)=(b^2-4ac)/(4a^2)

(x+b/(2a))^2=(b^2-4ac)/(4a^2)

x+b/(2a)=±√(b^2-4ac)/(4a^2)

x+b/(2a)=±√(b^2-4ac)/(2a)

x=(-b±√(b^2-4ac))/(2a)

Answer

answered: Guest

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

Answer

answered: Guest

it can be to see completed examples before writing, in order to examine what makes for an effective piece. see how these intros give some context before posing the topic and lead naturally into the body paragraphs, where the evidence will be listed. you can imagine how the author has organized the rest of the piece.

"we buried my cousin last summer. he was 32 when he hanged himself from a closet coat rack in the throes of alcoholism, the fourth of my blood relatives to die prematurely from this deadly disease. if america issued drinking licenses, those four men—including my father, who died at 54 of liver failure—might be alive today. that is a good example piece some steps that are .

. writing something that happened to you

.read a book you like to get ideas from there

. lastly you can make a venn diagram

hope this plz make brainliest

step-by-step explanation:

Similar questions

Предмет

Mathematics, 10.07.2019 20:20, hernan99961

Which of the following statements is not true about completing the square completing the square will always work. completing the square changes the value of the equation. when completing the square you add and subtract the same value to the equation. when completing the square you create a perfect square binomial.

Answers: 3

Предмет

Mathematics, 02.08.2019 17:00, jujurocks10

Which of the following statements is not true about completing the square? a. completing the square will always work. b. completing the square changes the value of the equation. c. when completing the square you add and subtract the same value to the equation. d. when completing the square you create a perfect square binomial.

Answers: 2

Предмет

Mathematics, 24.09.2019 23:00, simiyi1983

Which of the following statements is not true about completing the square? completing the square will always work. completing the square changes the value of the equation. when completing the square you add and subtract the same value to the equation. when completing the square you create a perfect square binomial.

Answers: 2

Предмет

Mathematics, 17.10.2019 22:50, kskfbfjfk

Astudent is given the problem: x^3+7x+9=0 . which of the following statements is false? a. completing the square cannot be used to solve the given equation. b. completing the square can only be used to solve a quadratic equation. c. completing the square can be used to solve the given equation. d. completing the square cannot be used because of the x^3

Answers: 2

Do you know the correct answer?

Solve x^2+6x+8 by completing the square....

Questions in other subjects:

Konu

Mathematics, 12.08.2020 07:01

Can somebody help me with this math problem ...

Konu

Mathematics, 12.08.2020 07:01

Part 1: Serena's drawing Follow these steps to find the angles of the trapezoids in Serena's drawing. If the angles of her trapezoid match the angles of the trapezoid stone,...

Konu

Mathematics, 12.08.2020 07:01

The area of triangle ABC is 31 1/4 square centimeters. What is the measure of b?...

Konu

Physics, 12.08.2020 07:01

What does the cross sign in the middle mean??? ...

Konu

Arts, 12.08.2020 07:01

Who is this chanel sucess record any has said this please subscribe this chanel...

Konu

Business, 12.08.2020 07:01

What economic benefit has the debt reschedule for developing countries?...

Konu

Mathematics, 12.08.2020 07:01

If the production rate is 975 brownies per hour at a bakery, how many brownies will be produced in an 8 hour shift?...

Konu

Chemistry, 12.08.2020 07:01

You are a paleontology professor working at a dig site looking for fossils. You come across a deposit that is emitting radiation. Upon further testing you find that the sample is c...

Konu

Mathematics, 12.08.2020 07:01

HELPP ASAP MATH The points -3,2 and -2,3 lie on a circle whose center is on the x-axis. What is the radius of the circle?...

Konu

Mathematics, 12.08.2020 07:01

The diagram below models the layout at a carnival where G, R, P, C, B, and E are various locations on the grounds. GRPC is a parallelogram. Parallelogram GRPC with point B between...

Other tasks in the category: Mathematics More task