Question

f(x) = 9x^3 + 2x^2 - 5x + 4
and
g(x) =5x^3 - 7x + 4
...
What is f(x) - g(x)?
Pls show step by step :)

Answer 1

@Mahoganie.Carson

Answer 2

@ILovePuppiesLol

Answer 3

@ganeshie8

Answer 4

@PillowFace750

Answer 5

@shamil98 (this is appropriate)

Answer 6

wow people are working at this time??

Answer 7

haha ye.

Answer 8

hey there.
so the first step is to put our equation in f(x) - g(x) form
since f(x) = 9x^3+2x^2-5x+4 and g(x) = 5x^3-7x+4

f(x) -g(x) must be
9x^3+2x^2-5x+4 -( 5x^3-7x+4)

but that's just the first step
next step is to distribute the negative on the right hand side of the equation
third and final step is to combine like terms

Answer 9

mkay :P

Answer 10

second step distributing the - on the right hand side of the equation

9x^3+2x^2-5x+4 -( 5x^3-7x+4)

9x^3+2x^2-5x+4 -5x^3+7x-4

Answer 11

we can also rearrange the equation to make it easier to combine like terms
so instead of
9x^3+2x^2-5x+4 -5x^3+7x-4
we have

9x^3-5x^3+2x^2-5x+7x+4-4
now just subtract like terms and we're done

Answer 12

@UsukiDoll You freakin rock! :P

Answer 13

thanks. can you handle the problem from here? or do you need further assistance?

Answer 14

um could you do this last part just to make sure I get it right? :)

Answer 15

sure

9x^3-5x^3+2x^2-5x+7x+4-4

4x^3+2x^2+2x

Answer 16

Thank you :)

Answer 17

is this in factored form? @UsukiDoll

Answer 18

No. Not in factored form.

4x^3+2x^2+2x =

2x * ( 2x^2 + x + 1)

@qwertykingGHLPO

Answer 19

I can't believe I got this late. ugh os lag. anyway the 2x is taken out and you're left with what Directrix wrote

Answer 20

:D