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
polet [3.4K]
3 years ago
11

Quadratic Equations How do I solve a quadratic equation?

Mathematics
1 answer:
malfutka [58]3 years ago
5 0
There are different ways to solve a quadratic equation, the main ones that i'm thinking about right now are:
1) factor the equation as a product:
 ex:        x^2+ 4x + 3 =0
             (x+3) (x+1) = 0
              x=-3 and x=-1 are the solutions.
To find (x+p) and (x+q) you have to think that (p+q )have to be equal to the number that is multiplied by x, in my example it was 4 (3+1=4), (p times q) have to be equal to the last number of the quadratic equation, the one that is not multiplied by any x, that in my example is 3 (3 x 1= 3)

2) The other way to solve a quadratic function is by using a formula:
    given: ax^2 +bx +c=0
    x= (-b +/- <span>√(b^2 -</span> 4ac)) / 2a
    
 ex: 3x^2 + 4x -2=0
    x= (-4 +/- √16-4(3)(-2)) / 6= (-4 +/- √16+24)/6= (-4 +/- <span>√40) / 6
now there are 2 possibilities: x= (-4+</span><span>√40) /6
                                                        and
                                              x= (-4 - </span><span>√40) / 6
I hope the examples were clear enough also if i did't get very nice numbers. Look closely to the sings + and -, they are very important</span>
You might be interested in
If the median were to be calculated at 82.5 degrees, then would the feasible mean be 81.6?
dmitriy555 [2]
I think your right,It would be 81.6.
 Hope this helps.  :D
7 0
3 years ago
How many times can 4 go into 68
katrin2010 [14]
4 can go into 68, 17 times. Hope this helps 68/4 = 17
7 0
3 years ago
Read 2 more answers
Solve the following equation for x: 2x – 3y = 6.
Ksivusya [100]

Answer:

x=3/2y+3

Step-by-step explanation:

Let's solve for x.

2x−3y=6

Step 1: Add 3y to both sides.

2x−3y+3y=6+3y

2x=3y+6

Step 2: Divide both sides by 2.

2x2=3y+62

x=32y+3

6 0
3 years ago
CAN SOMEONE HELP ME PLZ NO LINKS
Vesnalui [34]

Answer:

length = 2w - 3

l = length

w = width

2(length) + 2(width) = perimeter

2(2w - 3) + 2(w) = 60

6w -6 =60

w = 11

len = 2(11) - 3

Step-by-step explanation:

3 0
3 years ago
A car starts moving at 9:00 am and moves at a constant speed. At what time will the car be at the distance 200 miles from the st
andriy [413]

. i got the answer of 2:00

Step-by-step explanation:

yea

6 0
3 years ago
Read 2 more answers
Other questions:
  • Need help with this question, if you don’t know it don’t answer it please
    7·2 answers
  • Chord JK intersects chord ST at point L. Find the length of St. If necessary, round to the tenths place.
    11·1 answer
  • If There
    12·1 answer
  • What is the median for the data in the table's second column?
    10·1 answer
  • If you flip a fair coin 6 times, what is the probability that you will get exactly 4 tails?
    11·1 answer
  • an acting troupe is holding a performance in an arena they are selling child tickets for $2 and adult tickets for $4 the arena c
    6·1 answer
  • PLS HELP I NEED TO KNOW THIS LIKE RN<br> WILL GIVE BRAINLIEST TO FIRST GOOD ANSWER!!!!
    11·1 answer
  • Can you please Solve for x?
    7·1 answer
  • An insect crawls up 5cm every second on a 6cm vertical rod and then falls down 2cm over the next second. How many seconds will i
    11·1 answer
  • What is the vertex of <br> m(x) = -2(x-3)(x-9)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!