Question

f(x) = 4x + 7, g(x) = 3x2

Find (f + g)(x). (1 points)

Answer 1

42x^3 + 42x^2

Answer 2

No direct answering ! ^_^

(f+g)(x) is also written as f(x) + g(x).

Answer 3

you mean\[f(x)=4x+7\]
\[g(x)=3x^2\]

Answer 4

It is similar to this ....

f(x) = 3 g(x) = 10

f(x) + g(x) = 3 +10

(f+g)x = 13



Apply this logic to your problem

Answer 5

This gets you:\[f(x)+g(x)=(4x+7)+(3x^{2})\]

Answer 6

@retirEEd has the right idea.

Answer 7

(f+g)(x)=f(x)+g(x)

Answer 8

This leads to \[(f+g)(x)=4x+7+3x^2=3x^2+4x+7\]