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
Ipatiy [6.2K]
2 years ago
9

What is a quadratic equation? And how do you solve them?

Mathematics
1 answer:
Allisa [31]2 years ago
3 0

Answer:

A quadratic equation is some thing like

(x+2)^2

or

(x+2)(x+5)

In order to solve them, the most basic method is the FOIL method

F-First

O-Outside

I-Inner

L-Last

So for example

(x+2)^2

Which is basically

(x+2)(x+2)

So the first is the 2 Xs

(x+2)(x+2)

x*x=x^2

The outer is the x and the 2,

(x+2)(x+2)

2*x=2x

Now the Inner which is the 2 and the x

(x+2)(x+2)

2*x=2x

And finally the last  which is the 2 and the second 2

(x+2)(x+2)

2*2=4

Now add them all up

X^2+2x+2x+4

Combine like terms

x^2+4x+4

There you have it

Do the same with every other quadratic equation

You might be interested in
Write the rate as a unit rate:<br> 400 miles in 8 hours
nikdorinn [45]

Answer:

50miles/hour

Step-by-step explanation:

400/8 is 50.

4 0
3 years ago
6. Find the sum or difference.<br> 146<br> 155<br> a. +<br> 8<br> 8
Ipatiy [6.2K]
19191020202929293994494944
5 0
3 years ago
Please Help Asap Please And Thank You!
masha68 [24]

Answer:

Rate of change: 4/3

Step-by-step explanation:

Number of sodas/Total cost

pick a number

24/18 = 4/3

7 0
2 years ago
Read 2 more answers
Select the scenario that best matches the equation below:<br><br> 2x + 5 = 25
son4ous [18]

Answer:

Jamie has 5 cards. his friend Bill gives him twice the number of cards he has. After this Jamie has 25 card total. I hope that this helps!!

7 0
2 years ago
What is the standard deviation for the data given:<br> 5, 10, 7, 12, 0, 20, 15, 22, 8, 2
Ahat [919]

Answer:

6

Step-by-step explanation:

becvause youtvgk

4 0
2 years ago
Other questions:
  • Which property explains why these two expressions are equal? 7 q 4 = 4 7 q A) associative B) commutative C) distributive Elimina
    13·1 answer
  • 8.804 divided by 0.903 (include remainder) plz
    7·1 answer
  • 6 - 3x = 5x - 10x + 8
    9·1 answer
  • Find the area of the figure below by first finding the areas of the rectangle and triangle.
    12·1 answer
  • HELP PLEASE!!!!!!!!!!!!!!
    9·1 answer
  • What is (f−g)(x)?
    9·1 answer
  • The cost of in-state tuition at the University of Florida is $6,380 and is increasing at a rate of 3.1% per year. Write and use
    15·1 answer
  • This month nathon used 3 gallons of milk on his ceral each time he eats ceral he uses 1 /12 gallon of milk how many bowls of cre
    9·2 answers
  • HELP ASAPPPP PLEASE
    10·1 answer
  • 3
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!