Question

What is f(x) x g(x) if f(x)=2x+3 and g(x)=4x ?

6x+3
6x^2+12x
8x^2+12x
8x+3

Answer 1

is that one x suppose to be a multiplication sign or is it the variable x?

Answer 2

i think it is multiplication sign
\[f(x) \cdot g(x)\]
replace f with (2x+3)
and g with (4x)
\[(2x+3)(4x)\]
distribute

Answer 3

should the final answer be 8x^2+12x?

Answer 4

@imqwerty

Answer 5

yes 2x(4x)=8x^2
and 3(4x)=12x
so (2x+3)(4x) is 8x^2+12x