Question

Help me !! Factor this trinomial .... 5x^2 - 2x - 7

Answer 1

Its basically a quadatic equati on.. Evr heard of the mid term factorisation method? @Gabylovedyou ??

Answer 2

but lets take (5x 1) (x 7) as an example

Answer 3

gud, continue

Answer 4

this one is trickier than the last one

Answer 5

yep, so now u have to find out wat is a and c

Answer 6

u see it isnt going to always be 5x

Answer 7

in this case acx^2 = 10x^2
therefore ac = 10

Answer 8

wat two number when multiplied equal 10?

Answer 9

those rnt the only two, wat other numbers r there?

Answer 10

1 and 10

Answer 11

haha dont worry it is always over looked xD

Answer 12

so u write two (dont worry when ur gud at this u can do all this in 5 secs)
(5x )(2x )
(10x )(x )

Answer 13

now u need two number which when multiplied u'll get -3

Answer 14

yes! :D

Answer 15

so ur answer will be one of the four
(5x 1 )(2x 3)
(5x 3)(2x 1)
(10x 1)(x 3)
(10x 3)(x 1)

Answer 16

so lets luk at the first one

Answer 17

yes! :D

Answer 18

ur answer is (10x + 3)(x - 1)

Answer 19

another? just to make sure?

Answer 20

hmmm give me a sec to put this into words

Answer 21

illl show u it here and if u like how i explain it then ill pm u

Answer 22

dont worry ill send it as a pm if u like it :) if u dont then ill phrase it differently until u like it then ill pm it cause im only talking from the top of my head xD

Answer 23

half way done one sec :P

Answer 24

looks gud?

Answer 25

want to practice another one?

Answer 26

sure

Answer 27

it's alot too delete lol cannt u just close this topic and start a new one?

Answer 28

oh sry nvm lol haha

Answer 29

so u wan to do another one?

Answer 30

if you want to .. lol

Answer 31

u have another one or u want me to give u one?

Answer 32

i dont have another one

Answer 33

kk ill give u one

Answer 34

\[12x ^{2}+31x+30\]

Answer 35

so go ahead and try that one :)

Answer 36

ok hold on.....

Answer 37

sure thing

Answer 38

take ur time

Answer 39

im leaving but when u type in ur answer ill get the notification and ill be back

Answer 40

omg i gtg..... sorry thank you soo much for the help!!!

Answer 41

kk cya around :)