Question

3x^2 - 16 -12 factor

Answer 1

\[(3x + 2 )(x - 6)\]

Answer 2

thank you for the answer but how do you get it?

Answer 3

Well you need to know how to factor.

Answer 4

I do

Answer 5

multiply the coefficient of x by 12 3 x -12 = -36

Answer 6

i did

Answer 7

i got stuck there

Answer 8

Or you can use this equation\[x = -b \pm \sqrt{b ^{2} - 4ac} \div 2a\]

Answer 9

no thank you

Answer 10

there is an easier way

Answer 11

what are the factors of -36 that = -16

Answer 12

\[ax ^{2} + bx + c\] is the original equation to plug in numbers.

Answer 13

i don't know that why i am stuck

Answer 14

its already plugged in...im confused

Answer 15

So in that \[3x ^{2}- 16x -12\]
a = 3
b = -16
c = -12

Answer 16

right

Answer 17

i just need a common factor that adds to -16 but multiplies to -36

Answer 18

Here: http://www.tc3.edu/instruct/sbrown/ti83/quadrat.htm. This is a good program to plug into your calculator. Quadratics are something that you will always deal with and this will make it easier.

Answer 19

i don't need a calculater

Answer 20

I'm just saying for the future when you get quadratic equations like \[47x ^{2} -183x + 95\]

Answer 21

okay thank you

Answer 22

or
3454546565656434x^2+54496054x+0.434343883948=0

Answer 23

what

Answer 24

or even
5894854985985x^2+8485x+0.3434=0

Answer 25

if the method i was trying dosent work, and it looks like the factors are not working then use the formula Doc gave you because that will work every time.

Answer 26

i kow how to factor!!!