Functions

[math92]

f(x)=4x-7 and g(x)=6x

1. f(x)+g(x) 2. f(x)-g(x) 3. g(x)*f(x)



Please help

Thanks

 

[Loren]

Example:
f(x)=x and g(x)=2x-3

1. f(x)+g(x) = x + 2x-3 = 3x-3
2. f(x)-g(x) = x -(2x-3) = x -2x + 3 =-x+3
3. g(x)*f(x) =x(2x-3) = 2x[sup:2kzq3a2p]2[/sup:2kzq3a2p]-3x

 

[Mrspi]

f(x)=4x-7 and g(x)=6x

1. f(x)+g(x) 2. f(x)-g(x) 3. g(x)*f(x)



Please help

Thanks

You know what f(x) is, and what g(x) is....so,

1) f(x) + g(x) = (4x - 7) + 6x

Now, simplify the right side by combining like terms.

2) f(x) - g(x) = (4x - 7) - 6x

Again, simplify the right side.

3) f(x) * g(x) = (4x - 7)*6x

Use the distributive property to remove the parentheses on the right side.