Question

Let f(x)=3x+5 and g(x)=x^2 find f(x) + g(x)

A) x^2 +3x+5
B) x^3+5
C)3x^2+5
D)3x^3 +5x^2

Answer 1

Answer: A) x^2+3x+5

Explanation: None of these terms can be combined with each other so you leave them as is.

Answer 2

`\large\boxed{A).\,x^2+3x+5}`

Explanation:

In this question, we're trying to figure out what f(x) + g(x) equals to.

We are going to be plugging in the equations they gave to us and solve.

Equations we're going to use:

• f(x)=3x+5

• g(x)=x^2

Now, lets get to solving.

We would plug the equations in the appropriate spot. In other words, we're pretty much plugging them in to the right variable.

Your expression should look like this:

`3x+5+x^2`

Now we solve.

`3x+5+x^2\\\\x^2\,\text{can't combine with 3x because of the exponent, so we will eave it as is}\\\\\text{There is nothing else we can combine, so it would stay as:}\\\\x^2+3x+5`

You should end up with x²+3x+5.

This means that your final answer would be A) x^2 +3x+5

I hope this helped you out.

Good luck on your academics.

Have a fantastic day!