Question

Can someone explain to me how to solve problems like this? Thanks!

Answer 1

`3x^2-8x+9`

Explanation:

In this problem, you are adding 2 functions. To do this, simply take the 2 different rules for each function and add them together. This looks like
`(2x^2-8x+5)+(x^2+4)`. Then, to get the final answer remove the parentheses and add like terms. The terms
`2x^2` and
`x^2` are like while 5 and 4 are also like. If you add
`2x^2` and
`x^2` you get
`3x^2` and 5+4 is 9. Therefore, the final answer is
`3x^2-8x+9`