Question

PLEASE HELP ME AND SHOW WORK!!!!!!!


Which polynomial has 3x + 4 as a factor?

Question options:

9 x squared plus 3 x minus 12


12 x squared plus 7 x minus 8


9 x squared minus 3 x minus 8


12 x squared minus 2 x minus 20

Answer 1

what choice can you dividing without remainder by 3x+4 so this will be the right answer

Answer 2

I dont know

Answer 3

9 x squared plus 3 x minus 12 9x^2 +3x -12/3x+4 = 3x -3
9x^2 +12x
-----------
0 -9x -12
-9x -12
---------
12 x squared plus 7 x minus 8 0 0 bc. here how you see the remainder is zero so this mean that this choice will be the right answer - ok. ?
9 x squared plus 3 x minus 12


12 x squared plus 7 x minus 8


9 x squared minus 3 x minus 8


12 x squared minus 2 x minus 20


9 x squared minus 3 x minus 8


12 x squared minus 2 x minus 20

Answer 4

do you understand it now how we have got it ?

Answer 5

Yeah a little, So how 9 x squared plus 3 x minus 12 the answer? if it all = to zeros ? that the part the confused me a little

Answer 6

bc how you see above i divided the 9x^2 +3x -12 by 3x+4 and i got without remainder 3x -3 so this mean that (3x+4)(3x-3) = 9x^2 +3x -12

Answer 7

oh okay i understand that now, thank you :)

Answer 8

np

was my pleasure and anytime

good luck

bye bye