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
kramer
3 years ago
5

Rewrite 2x^2+6x-8 and x+3 in standard form

Mathematics
1 answer:
musickatia [10]3 years ago
4 0

Answer:

2x^2+6x^2-5

Step-by-step explanation:

1. (2x^2+6x-8)+(x+3)

2. combine like terms

3. 2x^2+6x^2-5

You might be interested in
Which of the following is a solution of x^2 2x = −2?
dem82 [27]
x^2+2x=-2\\
x^2+2x+1=-1\\
(x+1)^2=-1\\
x+1=\sqrt{-1}\vee x+1=-\sqrt{1}\\
x=-1+i \vee x=-1-i

3 0
3 years ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
likoan [24]

Answer:

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, x^2+4=6x

This can be written as ,  x^2-6x+4=0

We have to solve using quadratic formula,

For a given quadratic equation ax^2+bx+c=0 we can find roots using,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}  ...........(1)

Where,  \sqrt{b^2-4ac} is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}

\Rightarrow x=\frac{6\pm\sqrt{20}}{2}

\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}

\Rightarrow x={3\pm \sqrt{5}}

\Rightarrow x_1={3+\sqrt{5}} and \Rightarrow x_2={3-\sqrt{5}}

We know \sqrt{5}=2.23607(approx)

Substitute, we get,

\Rightarrow x_1={3+2.23607}(approx) and \Rightarrow x_2={3-2.23607}(approx)

\Rightarrow x_1={5.23607}(approx) and \Rightarrow x_2=0.76393}(approx)

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

7 0
3 years ago
Read 2 more answers
What is the answer????
morpeh [17]
2.5 cans of food ......
7 0
3 years ago
Read 2 more answers
Use the Distributive Property to simplify (–5 – c)( –1).
damaskus [11]
It’s the first option, 5 + c
4 0
1 year ago
Read 2 more answers
Help me with factor trees pls it’s timed <br> There is a photo if u click
oksano4ka [1.4K]

Answer:

                        28

                  4             7

           2             2

here it is, hope it helps :)

3 0
2 years ago
Other questions:
  • Can you please help?
    12·1 answer
  • Which of the following is the factored form of the given equation?
    5·2 answers
  • The area of the base of a square notepad is 2.25 square inches. What is the length of one side of the base of the notepad?
    11·1 answer
  • 1/4x+5/3x-4=2-1/12x what is the answer ??????
    8·2 answers
  • What is the percent of increase from 30 to 51??
    10·1 answer
  • How do you factor the trinomial 3x^2+18x-21?
    14·1 answer
  • A rectangle prism has length 12 centimeters and width 4 centimeters. If its surface area is 467 square centimeters, what is the
    9·1 answer
  • kyle is making subs for a fundraiser. he has a roll of sub-wrap that is 14 3/8 feet long. on monday, he used 8 5/6 feet long of
    15·1 answer
  • I NEED HELP!! WILL GIVE BRAINLEST!!!
    9·1 answer
  • A bank is offering 2.5% simple interest on a savings account. if you deposit $5000,how much interest will you earn in one year?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!