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split the function into three pieces: (x-3) = 0 (x+8) = 0 (x-11) = 0 solve for x
i dont know how to do that at all...
(x-3) = 0 what is x?
@pooja195 @willsgirl16 @Mehek14 @mathsterman
sorry um x = 3? right
yes, now keep going with the other two
(x+8) = 0 x = ?
x= 11 x = -8?
yup, so those are your zeros x = 3, x = 11, x = -8
WOW THANKS A LOT WOOHOO DIDNT KNOW IT WAS THAT EASY CAN U HELP WITH MORE???
sure I guess
What are the factors of 3x2 + 23x − 8? (3x − 4)(x + 2) (3x − 2)(x + 4) (3x − 8)(x + 1) (3x − 1)(x + 8)
do u know???
theres two more if u dont know this one lol :))))
use foil method to expand each one
idk how to do that...
can we come back and u explain later?
i have moere
sure I guess
Factor the GCF: −6m2 + 18m − 36. −6(m2 − 3m + 6) −1(6m2 − 18m + 36) −6m(m2 − 3m + 6) −6(m2 + 3m − 6) can u just give the answer then explain for both im in the middle of a lesson and its about to end lol :))
hint: the greatest common factor is 6, so we divide each term by 6 and write 6 outside
we can also factor out -1, which reverses each of the signs inside the parentheses
so witch one are you on? im leaning towards c
it's not c you can't factor out m since not every term has m in it (36 doesn't have m)
like I said before... the GCF is -6 which goes on the outside of the parentheses... then we reverse the signs
ok so witch one???
nonono its A!!! @vocaloid
i divided all of em
What are the factors of 3x2 + 23x − 8? (3x − 4)(x + 2) (3x − 2)(x + 4) (3x − 8)(x + 1) (3x − 1)(x + 8) this one? @vocaloid
multiply each of the answer choices out to see which one matches the original hint: (A-B)(C+D) = A*C + A*D - B*C - B*D
so, using our first answer choice as an example... (A-B)(C+D) = A*C + A*D - B*C - B*D (3x − 4)(x + 2) = (3x)(x) + 2(3x) - 4*x - 8 = 3x^2 + 2x - 8 which does NOT match the original so we keep going
ok so its not a.. how do u find like the a*c and etc..?
you match up the numbers....
compare: (A-B)(C+D) = (3x − 4)(x + 2)
A = 3x, B = 4, C = x, and so on...
ahhh ok ill try one second thanks
4x + d)(4x -6) ????? @Vocaloid
I'm not sure where you're getting those numbers...
(3x-2)(x+4) = (A-B)(C+D)
first tell me what A, B, C, and D are
a= 3 b = -2 c = x d = 4?
am i right
check A and B again
I dont have any time can u just tell me and explain because im getting really confused
please please please
THANK YOU SO MUCH OMG YOU'RE A LIFE SAVER HOLY CRAP
C = x, D = 4
now use our formula...
(A-B)(C+D) = A*C + A*D - B*C - B*D
OH OK 4x + 12 and -2x - 8???
is that right?
i got it wrong didnt i :C
plz just tell me the answer im horrible at this... @Vocaloid
What are the factors of 3x2 + 23x − 8? (3x − 4)(x + 2) (3x − 2)(x + 4) (3x − 8)(x + 1) (3x − 1)(x + 8) @willsgirl16 help meh