Question

i really need some help

Answer 1

on which topic ?

Answer 2

quadratic equations

Answer 3

yes, i can help. post your question.

Answer 4

i did up to 55sqrtof -55^2-4(24)(-24) all over 48

Answer 5

which is 55 + or - sqrt of 721 all over 48

Answer 6

then i got stuck, i know i have to factor right?

Answer 7

u have used quadratic formula to find roots, when it was asked to factor.
if u only want an answer it doesn't matter what u use , factoring or formula...so do u want an answer or do u want to learn factoring?

Answer 8

i want to learn

Answer 9

ok, so u got quadratic equation as
24p^2 -55 p -24 = 0
right ?
now tell me 2 numbers whose product is -24*24 = -576 and sum is -55

Answer 10

that's the part that i hate, because it takes so long to find the numbers. there's no easy way to find them? or a trick

Answer 11

-64 and 9

Answer 12

thats correct :)
so u write your equation as
24p^2 -64p +9p -24 = 0
ok ?
now what can u take out common from 1st 2 terms ??

Answer 13

p?

Answer 14

p and ? what can u take common from 24 and 64 ?

Answer 15

4

Answer 16

nice try .... what about 8 ?

Answer 17

yeah

Answer 18

and then the other one is 3(3p-8)

Answer 19

so u take 8p common
8p(3p-8) + 3 (3p-8) = 0
got this ?
yes, other part is correct

Answer 20

which gives you (8p+3)(3p-8)

Answer 21

excellent, u are good at this :)

Answer 22

lol yeah right

Answer 23

so your roots are ?

Answer 24

8p+3 = 0 or 3p-8 = 0
u know what to do next?

Answer 25

ok so -3/8 and 8/3?

Answer 26

exactly :)

Answer 27

thank you!

Answer 28

welcome :)
u did most part of the problem...

Answer 29

uh is there something i have to do after that? because it says its wrong

Answer 30

multiply?

Answer 31

did u write it like this ?
\(\huge{\frac{-3}{8},\frac{8}{3}}\)
no,don't multiply...

Answer 32

@eli123 ,did u get it right ?

Answer 33

i got it :) i had put the negative sign in front of the whole fraction :/ my bad @hartnn