Question

Can someone help me:(?
Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring.
-b b2 - 4ac 2a

Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:

4x2 + 6x + 2 = 0 (2 points)

Answer 1

this was another one i dint quite get

Answer 2

The "discriminant" gives this information. It is the square root part of the quadratic formula. \[\sqrt{b^2-4ac}\]

Answer 3

From here solve the equation

Answer 4

Start by listing your abc values
a=?
b=?
c=?

Answer 5

\[\huge~\rm~ax^2+bx+c=0\]

Answer 6

4x^2+6x++2=0

Answer 7

is that how it should be set up in order

Answer 8

yes but we need to figure out the values using
\[\huge~\rm~ax^2+bx+c=0\]
That equation can you list just the NUMBERS not the signs of variables

Answer 9

im confused

Answer 10

@pooja195 after this, can you solve my question?
http://openstudy.com/study#/updates/55b787e4e4b0f0c1f13fd1a9

Answer 11

Ok anything ^2 is the a value anything with an "x" is the b value anything with no varible is the c value now list the numbers :)

Answer 12

so b^2 is A, -b is B, and C is 2a?

Answer 13

wut? o-o
wow you really are confused ok lets start from scratch
\[\huge~\rm~x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]
This is the quadratic formula
\[\huge~\rm~ax^2+bx+c=0\]
This is standered form
The discernment is The "discriminant" gives this information. It is the square root part of the quadratic formula. \[\sqrt{b^2-4ac}\]
We need to solve
\[\huge~\rm~4x^2 + 6x + 2 = 0\]
Notice how it all matches up with the standered form equation?
\[\huge~\rm~ax^2+bx+c=0\]

Answer 14

i know, i said that already

Answer 15

You have the numbers wrong
a=4
b=6
c=2

Answer 16

oh

Answer 17

then why do we need just the numbers

Answer 18

We need just the numbers so that we can solve using the discernment

Answer 19

ok

Answer 20

@pooja195 I request you... okay after this

Answer 21

\[\sqrt{b^2-4ac}\]
So now we have our abc values
\[\huge~\rm~ \sqrt{6^2-4(4)(2)}\]
Solve that

Answer 22

6^2-8 under a square root idk what

Answer 23

i started with parenthesis and then multiplied 4 by (8)

Answer 24

ok lets do this step by step whats 6^2?

Answer 25

36

Answer 26

ok leave that aside whats -4 times 4 ?

Answer 27

-16

Answer 28

Ok good -16 x 2=?

Answer 29

-32

Answer 30

good whats 36-32?

Answer 31

4

Answer 32

The 4ac

Answer 33

4ac decides whether you get complex number or not.

Answer 34

good now whats the
\[\huge~\rm \sqrt4\]

Answer 35

2

Answer 36

@saseal you are confusing the asker we are already done with the problem.

Answer 37

oh ok

Answer 38

@kinserkara so whats your final answer?

Answer 39

sry about that

Answer 40

2a

Answer 41

its ok :)
@kinserkara now 2a it would just be x=2

Answer 42

so the final answer is x=2

Answer 43

yep

Answer 44

ok thanks

Answer 45

No problem :)