Given f(x) & g(x),find;
a) f+g, b) f-g, c) f*g, d) f/g
f(x)=5x+1
g(x)=3x-1
Am I right???
a) (5x+1)+(3x-1)
8x+1-1
8x
b) (5x+1)-(3x-1)
2x+1-1
2x
c) (5x+1)*(3x-1)
15x^2+1-1
15x^2*1*-1
15x^2-1
d) not sure where to start or what to do

Question

Given f(x) & g(x),find;
a) f+g, b) f-g, c) f*g, d) f/g
f(x)=5x+1
g(x)=3x-1
Am I right???
a) (5x+1)+(3x-1)
8x+1-1
8x
b) (5x+1)-(3x-1)
2x+1-1
2x
c) (5x+1)*(3x-1)
15x^2+1-1
15x^2*1*-1
15x^2-1
d) not sure where to start or what to do

anonymous · Answer

a. correct

anonymous · Answer

b. 5x + 1 - 3x + 1
2x  + 2
you need to take the negative sign to the -1 as well

anonymous · Answer

c. (5x +1 ( 3x -1)

15x^2 +5x + 3x -1

15x^2 +8x -1

anonymous · Answer

|dw:1330224774865:dw|

anonymous · Answer

on d do I leave it like it is  or do I factor it out?

anonymous · Answer

there is no way to factor that out so it must stay