Question

FANANDMEDAL
let f(x)=x-2 and g(x)=x^2-3x+2
find f(x)*g(x) and find f(x)-g(x)

i have to do a bunch of these and i dont understand how. my teacher didn't give us an example problem and she's out of office today.

Answer 1

@xMissAlyCatx

Answer 2

@pooja195 @imqwerty

Answer 3

Just plug in the f(x) and g(x) into the forms that they are given ...

Answer 4

And then simplify.

Answer 5

but how do i multiply x-2 and x^2-3x+2 ?

Answer 6

or subtract them

Answer 7

http://www.purplemath.com/modules/fcncomp3.htm Here, let this better explain it to you .

Answer 8

It should give you some proper information on how to do it..

Answer 9

i still dont understand, is there somewhere where they just do a problem thats the same to show you how to do it

Answer 10

like i just need once to be showed how to d it and then ill repeat it

Answer 11

let f(x)=x-2 and g(x)=x^2-3x+2.

Then (f*g)(x)= (x-2)*(x^2-3x+2). Try doing this; it's very similar to the "FOIL method" of multiplying binomials.

(f-g)(x) is simple subtraction of like terms.

f(x) = x - 2
-g(x) = -x^2 + 3x - 2
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Answer 12

Please share your work.

Answer 13

would the subtraction one be -x^2 - 2x

Answer 14

@mathmale

Answer 15

for the multiplication one i just dont know where to start

Answer 16

Thank you @mathmale
Sorry that I could not better explain it to ou @ccastudentgrade10

Answer 17

@mathmale