Question

3x^2+16x-44=0

solve by factoring

Answer 1

(3x + something) (x - something)

Answer 2

the somethings you work out by (what x what = -44 and what + what = +16)

Answer 3

remember there's a 3x in there though

Answer 4

factors of 44 are 1,44; 2,22 ; 4,11

Answer 5

so pick which pair fits your equation

Answer 6

@ashley007

Answer 7

2 22?

Answer 8

yep, as 3x 2 is 6, and 22-6 = 16
so the 2 will be the -something and the 22 the + something

Answer 9

thats final answe?

Answer 10

no, that's how you factor it

Answer 11

so plug that into you equation and you get (3x +22) ( x-2) = 0
therefore either the 3x +22 = 0
or the x-2 = 0

Answer 12

so rearrange those 2 equations to see what x = in each, and those are your answers for the x-intercepts

Answer 13

Sorry find 2 factors of 44*3 which add upto 16...

Answer 14

hmm 7 and 9

Answer 15

@higherlearning ....

Answer 16

i dont get that

Answer 17

Fyn multiply 44 by 3.. Wat do u get?

Answer 18

132

Answer 19

Good. Now find any 2 factors of 132 which mudt add upto 16....

Answer 20

@higherlearning ?!??

Answer 21

8

Answer 22

I'll help u out... Its 22 &6...now can u do it???

Answer 23

how do those add up to 16

Answer 24

Sorry dubtract it... I'm really tired....

Answer 25

I bet u can do it now... I dtart... U continue....
3x^2+16x-44=0
3x^2+22x-6x-44=0
3x(x-2)+22(x-2)=0
now continue @higherlearning ...

Answer 26

@higherlearning ??? R u there ??

Answer 27

im lost

Answer 28

Comeon u can do it now... Try.. I'll correct u..

Answer 29

Now we get 2 factors..
(3x+22) &(x-2)... Solve them 1 by 1...
3x+22=0
3x=-22
X=-22/3.. similarly do d second one...

Answer 30

(x-2)=0
x=2
Therefore x=-22/3,2 !!! There u go @higherlearning !!